Did Dinosaurs Turn Into Birds?



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Topic: Religions > Bible
User: "Gabriel"
Date: 20 Jan 2008 09:30:53 PM
Object: Did Dinosaurs Turn Into Birds?
http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds
Partial outline of the scientific discussion:
Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung
Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.
Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.
Origin of Flight
Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers, no mechanism to
change a reptilian lung into an avian lung, and no legitimate
dinosaurs found with feathers are all good indications that
dinosaurs didn’t turn into birds. The evidence is consistent with
what the Bible teaches about birds being unique and created after
their kinds."
Praise the Lord, our Creator!
.

User: "Midwinter"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 08:29:55 AM
Gabriel <gabriel_baptist@hotmail.com> said :

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers, no mechanism to
change a reptilian lung into an avian lung, and no legitimate
dinosaurs found with feathers are all good indications that
dinosaurs didn't turn into birds. The evidence is consistent with
what the Bible teaches about birds being unique and created after
their kinds."

So let me get this right: a quirk of evolution that had one type of bird
appear before another type of bird is proof that evolution is wrong which
in turn is proof that GodDidItLikeItSaysInGenesis. Right?
Except for the fact that if you're rejecting evolution as a concept
because you think it prohibits God from having DoneIt (which,
incidentally, it doesn't at all), then you can't use a point of evolution
as support for your own argument - at least if you want to retain any
semblance of honesty and integrity.
Let me put it in simpler terms: trying to use evolution as disproof of
evolution is as irrational (and fundamentally dishonest) as claiming the
Bible is true because the Bible says it's true.
1) I don't know offhand whether archaeopteryx appeared before other types
of bird; I've always thought that was the case, but I'm not going to rely
on a site called 'Answers In Genesis' to give me unbiased information
about evolutionary science - by definition the site has an agenda and is
therefore an unreliable source.
2) It's not impossible in evolutionary terms that one species might arise
before or after the independent appearance of another similar species
(dolphins look startlingly like fish) - evolutionary change is usually a
response to environment and circumstances, after all. And if it
happened, it certainly wouldn't make evolution anything other than a
solid, proven fact.
3) Even if evolution *was* somehow cast into doubt (which would delight
the medical industry since they could presumably stop struggling to keep
up with the increasing resistance of evolving bacteria to drugs), it's a
long hard road from 'evolution is false' to 'Abramic Genesis doctrine
must therefore be true'.
4) Evolution's status as an absolute fact doesn't require the rejection
of God - only the rejection of some of the fluff that generations of
believers have surrounded It with.
.
User: "Bible Bob"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 10:58:12 AM
On Mon, 21 Jan 2008 08:29:55 -0600, Midwinter
<midwinter_m@hotmail.co.uk> wrote:

Gabriel <gabriel_baptist@hotmail.com> said :

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers, no mechanism to
change a reptilian lung into an avian lung, and no legitimate
dinosaurs found with feathers are all good indications that
dinosaurs didn't turn into birds. The evidence is consistent with
what the Bible teaches about birds being unique and created after
their kinds."


So let me get this right: a quirk of evolution that had one type of bird
appear before another type of bird is proof that evolution is wrong which
in turn is proof that GodDidItLikeItSaysInGenesis. Right?

Except for the fact that if you're rejecting evolution as a concept
because you think it prohibits God from having DoneIt (which,
incidentally, it doesn't at all), then you can't use a point of evolution
as support for your own argument - at least if you want to retain any
semblance of honesty and integrity.

Let me put it in simpler terms: trying to use evolution as disproof of
evolution is as irrational (and fundamentally dishonest) as claiming the
Bible is true because the Bible says it's true.

1) I don't know offhand whether archaeopteryx appeared before other types
of bird; I've always thought that was the case, but I'm not going to rely
on a site called 'Answers In Genesis' to give me unbiased information
about evolutionary science - by definition the site has an agenda and is
therefore an unreliable source.

2) It's not impossible in evolutionary terms that one species might arise
before or after the independent appearance of another similar species
(dolphins look startlingly like fish) - evolutionary change is usually a
response to environment and circumstances, after all. And if it
happened, it certainly wouldn't make evolution anything other than a
solid, proven fact.

3) Even if evolution *was* somehow cast into doubt (which would delight
the medical industry since they could presumably stop struggling to keep
up with the increasing resistance of evolving bacteria to drugs), it's a
long hard road from 'evolution is false' to 'Abramic Genesis doctrine
must therefore be true'.

4) Evolution's status as an absolute fact doesn't require the rejection
of God - only the rejection of some of the fluff that generations of
believers have surrounded It with.

Midwinter,
In order to know what the Bible says about the birds so that one could
compare what science says to what the Bible says one would have to
know what the Bible says.
Some birds were made on day five and other birds were formed from the
earth on day six - water based and eath based forms of flesh; hence of
the different kinds of flesh spoken of in Corinthians.
1Co 15:39 KJV
All flesh is not the same flesh: but there is one kind of flesh of
men, another flesh of beasts, another of fishes, and another of birds.
Isn't it suprising that goatherders knew about genetics, DNA, and
evolution before scientists.
Gen 1:20-23 KJV
20 And God said, Let the waters bring forth abundantly the moving
creature that hath life, and fowl that may fly above the earth in the
open firmament of heaven.
21 And God created great whales, and every living creature that
moveth, which the waters brought forth abundantly, after their kind,
and every winged fowl after his kind: and God saw that it was good.
22 And God blessed them, saying, Be fruitful, and multiply, and fill
the waters in the seas, and let fowl multiply in the earth.
23 And the evening and the morning were the fifth day.
Gen 2:19 KJV
19 And out of the ground the LORD God formed every beast of the
field, and every fowl of the air; and brought them unto Adam to see
what he would call them: and whatsoever Adam called every living
creature, that was the name thereof.
What creationists and scientists fail to consider is that some
creatures were brought forth from the water on day five and others
from the earth on day six. That is because they fail to blend the
information from chapter two with the information from chapter one to
get the whole story of the reconstruction (not creation) period.
Logically, creatures formed from the water and minerals in the oceans
and creatures from the ground of the earth with water added (Gen 2:6)
would be of different compositions and forms.
Genesis speaks about reproduction within "kind"; hence evolution with
species which is the only true form of evolution. Even mutations ocur
within speicies. You cannot breed and elephant and a mouse and get a
mousey elephant; or a bat and a robin and get a batbird.
Archeologists may find the bones of former life forms from the former
earth but those are different kinds than the kinds of Genesis 1:2 to
Genesis 2:19. If the word of God is right (and it is) and if it is
rightly divided (which it is not) then both religionists and
scientists are wrong. The smart ones will go to the word of God for
answers and adapt their science to what the word of God says. Then
their science and religion will make sense. They won't get all the
answers; but they don't need them. Whether an animal existed before
or after the reconstruction period has no bearing on how to maintain
fellowship with God which is what the Bible is all about. The Bible
is not a history book or a science book; but contains both. It is a
collection of letters written for the purpose of fellowship with God.
BB
http://www.biblebob.net
Nothing so completely baffles one who is full of trick and duplicity
himself, than straightforward and simple integrity in another.
Charles Caleb Colton, author and clergyman (1780-1832)
.
User: "TimK"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 07:20:22 PM
"Bible Bob" <biblebob@saintly.com> wrote in message
news:n9i9p31c48b91svgurni065sojpe33ojuk@4ax.com...

Midwinter,

In order to know what the Bible says about the birds so that one could
compare what science says to what the Bible says one would have to
know what the Bible says.

Using the bible as a source for explaining natural history is sorta like
using Aristotle to get a satellite into orbit.
.

User: "Midwinter"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 12:13:00 PM
Bible Bob <biblebob@saintly.com> said :

Midwinter,

In order to know what the Bible says about the birds so that one could
compare what science says to what the Bible says one would have to
know what the Bible says.

I'm actually pretty familiar with what the Bible says, having been raised
Christian and spent my life amongst Christians. My point here is that
Gabriel appears to be trying to use an element of evolution to disprove -
or at least undermine - the concept of evolution.
If I've got his/her motivation wrong then by all means correct me.
Whether or not the claim s/he's made about the archaeopteryx, or about
the nature of feathers, is true is not the point. The point is that
s/he's attempting to make evolution disprove itself.

Some birds were made on day five and other birds were formed from the
earth on day six - water based and eath based forms of flesh; hence of
the different kinds of flesh spoken of in Corinthians.

All according to a religious tradition I don't subscribe to, since not
only is there no evidence to support a literal interpretation of that
story but there is ample evidence for a model that would contradict it.
I don't discount things simply because there's no evidence FOR them - the
most I can say in that case is that such things can't be evidenced. But
if, as well as being no evidence FOR, there is evidence AGAINST, then I
*must* discount them. Genesis creation falls quite clearly into that
category.

1Co 15:39 KJV
All flesh is not the same flesh: but there is one kind of flesh of
men, another flesh of beasts, another of fishes, and another of birds.

Isn't it suprising that goatherders knew about genetics, DNA, and
evolution before scientists.

Isn't it surprising that Creationists are so willing to embrace evolution
when it suits them?
Yes - goatherders knew about evolution to an extent, in the sense that
animal husbandry and directed breeding have been practised for millennia.
It's hardly accurate to say that they knew about them 'before'
scientists, except to the extent that there were no 'scientists' in those
ancient times. But scientists aren't simply being slow on the uptake, as
you seem to imply: natural philosophers became naturalists, naturalists
became biological scientists - and everyone with an interest in the
subject knew that if you breed individuals with a specific trait together
you are likely to find the offspring will inherit that trait.
This is why the Creationist resistance to evolutionary principles
perplexes me: it requires the Creationist to reject so many solid
historical (and contemporary) facts in order to claim that evolution
doesn't happen.
The fact is that evolution is only a threat to *religious dogmas* (and
therefore to those who benefit from those dogmas), NOT to the possibility
that God exists.

What creationists and scientists fail to consider is that some
creatures were brought forth from the water on day five and others
from the earth on day six. That is because they fail to blend the
information from chapter two with the information from chapter one to
get the whole story of the reconstruction (not creation) period.
Logically, creatures formed from the water and minerals in the oceans
and creatures from the ground of the earth with water added (Gen 2:6)
would be of different compositions and forms.

Or, if one is able to accept that Genesis is myth and metaphor, and
respect it for what it is, one is freed immediately from the need to
construct such elaborate rationalisations.

Genesis speaks about reproduction within "kind"; hence evolution with
species which is the only true form of evolution.

It's not a matter of finding 'true' forms of evolution. Evolution simply
is. Any species that adapts over generations through mutation and
breeding is undergoing evolution. And there's no direction of evolution,
either: a species does not 'de-evolve' - it simply adapts to its
environment, even if that means returning to a form it had once evolved
away from (there's those dolphins again).

Even mutations ocur within speicies.

Mutations usually affect only one individual. They are normally genetic
replication errors and most will be either harmful or completely inert.
Some will be beneficial. You know, like mind-reading or invisibility
(it's true - I saw it on 'Heroes').
But seriously, if a mutation affects only one individual, then the
mutation occurs only within a species. Although that individual may find
that the mutation equips them better for survival, in which case the
mutation is likely to be passed on to future generations. However, at
that point it becomes an inherited characteristic, and ceases to be a
mutation.

You cannot breed and elephant and a mouse and get a
mousey elephant; or a bat and a robin and get a batbird.

True dat, as the youngsters say. But part of what makes a species a
distinct group is that its members can't usually breed outside of the
species - at least producing offspring that can continue to breed.

If the word of God is right (and it is)

And that's the problem: because it's a fundamental principle of
Creationist belief that that book is the Word Of God, and that is then
their test of *all other things*. It's the first premise against which a
Creationist judges ALL new information. The possibility that the book
might not, in fact, be the inerrant Word Of God, is discounted
immediately: yet only the book says that it is so. And even if we assume
that the book contains truth, what Creationists often don't take into
account is that 'truth' doesn't necessarily denote literal, historical
truth. There is truth, for example, in poetry - yet the events and
people featured in the poem might not necessarily have existed.
But because they're invested in the idea that if it's in the Bible it
must be absolutely true in the literal sense, they waste all that energy
fighting a battle that doesn't benefit anyone. God doesn't NEED Genesis,
you see. God doesn't NEED the Bible to be 'literal truth'. He doesn't
NEED us to understand how he's done things - in fact, it's rather
arrogant to assume that we could. Science, at least, deals with what
little of the natural world it can and - and this is important -
recognises that there're things it doesn't and might not ever know.
The trouble is that too many people worship the book rather than the God.
If God is responsible for all things then He is responsible for how they
ARE, not how we think they OUGHT to be after reading a book. Someone
somewhere first claimed that the Bible was the written Word Of God - and
people have obediently toed that line ever since. But if God is the
creator of all things, then the universe we live in is His Word - and if
that doesn't tally with what we see around us, then it's an affront to
that supposed God to reject what's actually there in favour of a book
written hundreds of generations ago by people who didn't have the ability
to see what we can see (just as we can't see what future generations may
see).
If God has created us, then He's done it through evolution. He's built
the universe through gravity. He's done it through electromagnetism and
the nuclear forces; through the interplay of time and space. And to
argue that God COULD NOT have used those methods - on the basis that they
aren't mentioned in that ancient text - is simply a declaration that one
does not believe in an all-powerful God.
.
User: "Bible Bob"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 03:43:46 PM
On Mon, 21 Jan 2008 12:13:00 -0600, Midwinter
<midwinter_m@hotmail.co.uk> wrote:

Bible Bob <biblebob@saintly.com> said :

Midwinter,

In order to know what the Bible says about the birds so that one could
compare what science says to what the Bible says one would have to
know what the Bible says.


I'm actually pretty familiar with what the Bible says, having been raised
Christian and spent my life amongst Christians. My point here is that
Gabriel appears to be trying to use an element of evolution to disprove -
or at least undermine - the concept of evolution.

I see. Personally, I think it is okay to use science to validate or
invalidate science. It is the check and balance that the system needs
to correct itself. The concept of evolution is scriptural, right out
of Genesis one. Science is nothing more than knowledge where one
man's knowledge may differ from another man's knowledge until the two
reconcile. God invented science; so it can't be bad, its the
interpretations and the religiousity of it that cause problems.
With regard to what Gabriel is doing; I do not know but the greater
cannot be perfect if the lesser is imperfect. I understand the tactic
but don't think that Christians need to use it. Our job is to speak
the truth in love to draw hearts to God; not to conform the world view
to the word view. The Answers in Genesis crowd begins with a false
premise and from that has built a religious system that is full of
flaws. I don't know Gabriel and do not know what he is into. I have
seen him post some good stuff and other stuff that I see inaccuracies
with; but I am thankful for what he tries to do.


If I've got his/her motivation wrong then by all means correct me.

Not my job to do that. I'm not qualified.


Whether or not the claim s/he's made about the archaeopteryx, or about
the nature of feathers, is true is not the point. The point is that
s/he's attempting to make evolution disprove itself.

Hmm. I don't study evolution but I do know that there is true
evolution and false evolution. On the true side, a daddy lion and a
mommy lion will produce a baby lion; not a frog. That baby lion may
have mutations caused by enviromental factors but they will not turn
the lion into a frog. Some think man came from a shrew; that would be
false evolution because man could not evolve from a shrew or even an
ape. The reason there are missing links is because there are none.



Some birds were made on day five and other birds were formed from the
earth on day six - water based and eath based forms of flesh; hence of
the different kinds of flesh spoken of in Corinthians.


All according to a religious tradition I don't subscribe to, since not
only is there no evidence to support a literal interpretation of that
story but there is ample evidence for a model that would contradict it.

I don't discount things simply because there's no evidence FOR them - the
most I can say in that case is that such things can't be evidenced. But
if, as well as being no evidence FOR, there is evidence AGAINST, then I
*must* discount them. Genesis creation falls quite clearly into that
category.

What creation? There was only one - the creation of the original
heavens and the earth. Everything after that was made or formed after
the former earth became uninhabitable. I'll tell you this because you
have a religious background. You should be able from what follows to
see how and why the AIG and creationist crowd stumble and are left
looking like fools to genuine scientists.
The false premise that the earth was created in six days. The Bible
does not say that. It says the heavens and the earth were created in
the begiining (however long and whenever that was). That earth became
uninhabitable. A new earth was reconstructed from the material left
over from the first earth. There was a six day period in which things
were made and formed and only two new things created - living
creatures with souls and spirit in one male and one female (not the
other males and females made and formed on the sixth day (Gen
2:1,19)). The creationists say that God created the earth in six days
and cite the following verse which says it was made in six days.
Created (bara) and made (asah) are not synonymous as the creationists
falsly teach:
Exo 20:11 KJV
For in six days the LORD made heaven and earth, the sea, and all that
in them is, and rested the seventh day: wherefore the LORD blessed the
sabbath day, and hallowed it.
Made not created.
Gen 1:31 KJV
And God saw every thing that he had made, and, behold, it was very
good. And the evening and the morning were the sixth day.
Made not created.
Isa 45:18 KJV
For thus saith the LORD that created the heavens; God himself that
formed the earth and made it; he hath established it, he created it
not in vain, he formed it to be inhabited: I am the LORD; and there is
none else.
Original heavens and earth created, second earth made and formed and
established to be inhabited by the new creatures. Old creatures on
the former earth are not ruled out; just not mentioned.



1Co 15:39 KJV
All flesh is not the same flesh: but there is one kind of flesh of
men, another flesh of beasts, another of fishes, and another of birds.

Isn't it suprising that goatherders knew about genetics, DNA, and
evolution before scientists.


Isn't it surprising that Creationists are so willing to embrace evolution
when it suits them?

I'm not a creationist. I'm a skeptic, a truth seeker, a me.
Creationists start with a false premise and must search the world over
for data to support their false premise.


Yes - goatherders knew about evolution to an extent, in the sense that
animal husbandry and directed breeding have been practised for millennia.
It's hardly accurate to say that they knew about them 'before'
scientists, except to the extent that there were no 'scientists' in those
ancient times. But scientists aren't simply being slow on the uptake, as
you seem to imply: natural philosophers became naturalists, naturalists
became biological scientists - and everyone with an interest in the
subject knew that if you breed individuals with a specific trait together
you are likely to find the offspring will inherit that trait.

I was talking about modern scientists. There have always been
scientists becuase science is nothing more than the natural way of
knowing things via the five senses. Goatherders were scientists
searching for the best ways to feed and care for their flocks.


This is why the Creationist resistance to evolutionary principles
perplexes me: it requires the Creationist to reject so many solid
historical (and contemporary) facts in order to claim that evolution
doesn't happen.

The fact is that evolution is only a threat to *religious dogmas* (and
therefore to those who benefit from those dogmas), NOT to the possibility
that God exists.

I'll agree with that so long as we are talking about true evolution
that has been proven to be factual. While I have not read all of
Darwins book which I bought at a yardsale or someplace, I do not see
from what I have read of it that there is a conflict. I see from
Mendal's Law that the word of God is right. I see from some of
Darwin's stuff that the word of God is right; but I have not studied
either in detail and don't know my arse from a hole in the ground when
it comes to either; just some basics.


What creationists and scientists fail to consider is that some
creatures were brought forth from the water on day five and others
from the earth on day six. That is because they fail to blend the
information from chapter two with the information from chapter one to
get the whole story of the reconstruction (not creation) period.
Logically, creatures formed from the water and minerals in the oceans
and creatures from the ground of the earth with water added (Gen 2:6)
would be of different compositions and forms.


Or, if one is able to accept that Genesis is myth and metaphor, and
respect it for what it is, one is freed immediately from the need to
construct such elaborate rationalisations.

In my case, figures of speech, has long been a study area of mine; for
about thrity years. I know the figures used in Genesis. I know what
is literal and what is figurative (maybe not all, but most). People
see myth and metaphor wher no myth or metaphor exists. They see that
because they fail to read what Genesis actually reveals.



Genesis speaks about reproduction within "kind"; hence evolution with
species which is the only true form of evolution.


It's not a matter of finding 'true' forms of evolution. Evolution simply
is. Any species that adapts over generations through mutation and
breeding is undergoing evolution. And there's no direction of evolution,
either: a species does not 'de-evolve' - it simply adapts to its
environment, even if that means returning to a form it had once evolved
away from (there's those dolphins again).

I'm not qualified to comment on that because I do not understand fully
what you are saying with regard to direction and de-evolving. What's
with the dolphins; aren't they a football team?



Even mutations ocur within speicies.


Mutations usually affect only one individual. They are normally genetic
replication errors and most will be either harmful or completely inert.
Some will be beneficial. You know, like mind-reading or invisibility
(it's true - I saw it on 'Heroes').

Well then it has to be true. Well, almost true. If Colonel Samantha
Carter (Stargate) says its true then it would have to be true; who can
argue with her smile.


But seriously, if a mutation affects only one individual, then the
mutation occurs only within a species. Although that individual may find
that the mutation equips them better for survival, in which case the
mutation is likely to be passed on to future generations. However, at
that point it becomes an inherited characteristic, and ceases to be a
mutation.

I see what you are saying and agree because it is logical; not based
on emotion or religious zeal.



You cannot breed and elephant and a mouse and get a
mousey elephant; or a bat and a robin and get a batbird.


True dat, as the youngsters say. But part of what makes a species a
distinct group is that its members can't usually breed outside of the
species - at least producing offspring that can continue to breed.


If the word of God is right (and it is)


And that's the problem: because it's a fundamental principle of
Creationist belief that that book is the Word Of God, and that is then
their test of *all other things*. It's the first premise against which a
Creationist judges ALL new information. The possibility that the book
might not, in fact, be the inerrant Word Of God, is discounted
immediately: yet only the book says that it is so. And even if we assume
that the book contains truth, what Creationists often don't take into
account is that 'truth' doesn't necessarily denote literal, historical
truth. There is truth, for example, in poetry - yet the events and
people featured in the poem might not necessarily have existed.

Well, the "Bible" is not the word of God if that is the book you are
referring to; only different versions of it which have been corrupted
by the editors of those versions.


But because they're invested in the idea that if it's in the Bible it
must be absolutely true in the literal sense, they waste all that energy
fighting a battle that doesn't benefit anyone. God doesn't NEED Genesis,
you see. God doesn't NEED the Bible to be 'literal truth'. He doesn't
NEED us to understand how he's done things - in fact, it's rather
arrogant to assume that we could. Science, at least, deals with what
little of the natural world it can and - and this is important -
recognises that there're things it doesn't and might not ever know.

The trouble is that too many people worship the book rather than the God.
If God is responsible for all things then He is responsible for how they
ARE, not how we think they OUGHT to be after reading a book. Someone
somewhere first claimed that the Bible was the written Word Of God - and
people have obediently toed that line ever since. But if God is the
creator of all things, then the universe we live in is His Word - and if
that doesn't tally with what we see around us, then it's an affront to
that supposed God to reject what's actually there in favour of a book
written hundreds of generations ago by people who didn't have the ability
to see what we can see (just as we can't see what future generations may
see).

If God has created us, then He's done it through evolution. He's built
the universe through gravity. He's done it through electromagnetism and
the nuclear forces; through the interplay of time and space. And to
argue that God COULD NOT have used those methods - on the basis that they
aren't mentioned in that ancient text - is simply a declaration that one
does not believe in an all-powerful God.

Can't disagree with you, there. I would put it this way. God gave
and men corrupted what he gave and developed religious, political, and
philosophical programs from their own perversions. I don't understand
everything in the word of God even though I have been searching the
scriptures diligently for many many years. What I have learned is
that God wanted a family and did what necessary to cause one to be.
Within that family is much sibling rivalry.
Nice post.
Bob
.
User: "TimK"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 07:21:53 PM
"Bible Bob" <biblebob@saintly.com> wrote in message
news:7p1ap3tfh4p0fce55ne8qauc3obffsb21k@4ax.com...

I see. Personally, I think it is okay to use science to validate or
invalidate science.

Which would be relevant if that's what he/she were doing.
.

User: "Midwinter"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 05:48:17 PM
Bible Bob <biblebob@saintly.com> said :

I see. Personally, I think it is okay to use science to validate or
invalidate science. It is the check and balance that the system needs
to correct itself.

In principle, true: scientific conclusions should be subject to checks,
and questioned in every way possible. That's an integral part of
science, and it's been applied to the modern scientific model of
evolution.
However, I question the use of

The concept of evolution is scriptural, right out of Genesis one.

Then why, I wonder, is it so fiercely resisted by so many who worship the
Bible as opposed to worshipping God?

Science is nothing more than knowledge where one
man's knowledge may differ from another man's knowledge until the two
reconcile. God invented science; so it can't be bad, its the
interpretations and the religiousity of it that cause problems.

By definition, God created everything - assuming we allow the premise
that God exists. And He created it using whatever means He chose to use
- and that, of course, could easily have included evolution. That's my
point: insisting on Genesis 'truth' and rejecting the discoveries being
made by science is preferring the word of man over the Word of God.
Men wrote the Bible; men claimed that the Bible was the inerrent truth of
God; and other men continue to believe them without ever asking
themselves what God really might be.

With regard to what Gabriel is doing; I do not know but the greater
cannot be perfect if the lesser is imperfect. I understand the tactic
but don't think that Christians need to use it. Our job is to speak
the truth in love to draw hearts to God; not to conform the world view
to the word view.

I would accept that. That sounds like looking to God before looking to
the Bible - which makes sense to me.

I don't know Gabriel and do not know what he is into. I have
seen him post some good stuff and other stuff that I see inaccuracies
with; but I am thankful for what he tries to do.

I presume that the majority of what you have seen him do does not entail
rejecting the magnificence and complexity of God's Creation in favour of
ancient stories written by people who did not yet have the means to see
it as well as we can.

Whether or not the claim s/he's made about the archaeopteryx, or about
the nature of feathers, is true is not the point. The point is that
s/he's attempting to make evolution disprove itself.


Hmm. I don't study evolution but I do know that there is true
evolution and false evolution. On the true side, a daddy lion and a
mommy lion will produce a baby lion; not a frog.

That is *evolution*. The code of the parents combines to create the
offspring.
The 'false' evolution you refer to is a red herring presented by
Creationists either as an attempt to discredit the very idea, or as a
result of their lack of understanding of that idea.
No evolutionary principle involves two parents of one species creating
offspring of a different species. Creationists will often hold up to
ridicule the idea that men evolved from apes - essentially one species
springing from another. But that's not what evolutionary theory says.
It actually says that ape and man evolved from a common ancestor, which
is quite different.
But can one species change into another, even over generations? Not as
such: assuming we live so long, humans in a million years' time will
still be humans, no matter how different they might look. But if two
groups of humans get separated and subjected to different environmental
pressures, then meet again a million years down the line, it may be that
the two groups can no longer breed. At this point, humans will have
become two distinct species - both different, but both just as human as
ours today.
Evolutionary theory does not require that one species springs from
another - but it certainly does allow for one species to change
significantly over time.
That baby lion may

have mutations caused by enviromental factors but they will not turn
the lion into a frog. Some think man came from a shrew; that would be
false evolution because man could not evolve from a shrew or even an
ape. The reason there are missing links is because there are none.

There are none in the sense that a Creationist - like yourself - would be
willing to understand them. Your error is in assuming that changes in
species - the sort of changes that would see the early mammal evolve into
the modern man - must happen within a short space of time. THAT is where
the falsehood comes in. Yours is a false premise used as the foundation
of a false argument against a process you are unwilling to understand.
(I say unwilling rather than unable because you're clearly intelligent -
thus your lack of understanding must come from a refusal to learn, rather
than an inability.)
Incidentally, once again, no-one has suggested that man evolved from
shrew. But man and shrew had a common ancestor - as indeed did any two
species if we look far enough back.

What creation? There was only one - the creation of the original
heavens and the earth.

Yes. I would call that creation the Big Bang.

The false premise that the earth was created in six days. The Bible
does not say that. It says the heavens and the earth were created in
the begiining (however long and whenever that was). That earth became
uninhabitable. A new earth was reconstructed...

Again, this is a story I have no need to rationalise, since my faith does
not require me to crowbar it into the world I see around me.

Made not created.


Made not created.

'Made' and 'created' are synonymous in English. If they are not
synonymous in the Bible's 'original' language (if it could be said to
have one) then it is only evidence that the book is not the infallible
Word of God.

Original heavens and earth created, second earth made and formed and
established to be inhabited by the new creatures. Old creatures on
the former earth are not ruled out; just not mentioned.

Again, I have no need to look for former Earths, since the one I have is
already capable of accommodating everything discovered by science. If
the world I see conflicts with the Bible then I am afraid it is the Bible
that's cast into doubt. Even so, a simple acceptance that the Bible need
not be literal truth would make the whole thing work quite nicely.

I'm not a creationist. I'm a skeptic, a truth seeker, a me.
Creationists start with a false premise and must search the world over
for data to support their false premise.

As - you must surely realise - I see you doing when you speak of former
Earths and drawing a distinction between 'made' and 'created'.

I was talking about modern scientists. There have always been
scientists becuase science is nothing more than the natural way of
knowing things via the five senses. Goatherders were scientists
searching for the best ways to feed and care for their flocks.

Precisely my point: it's misleading to imply that scientists were just
slow to realise that this was going on.

The fact is that evolution is only a threat to *religious dogmas* (and
therefore to those who benefit from those dogmas), NOT to the
possibility that God exists.

I'll agree with that so long as we are talking about true evolution
that has been proven to be factual.

No, we are talking about *evolution*, which does not require dividing
into two types for the purpose of protecting a dogmatic belief. There is
no 'true' or 'false' evolution - there is only evolution, and whether or
not you understand what it is.
While I have not read all of

Darwins book which I bought at a yardsale or someplace, I do not see
from what I have read of it that there is a conflict. I see from
Mendal's Law that the word of God is right.

I am sure you have found a way to interpret Mendel's Laws to reach the
outcome that you want - that's the larger part of faith. But if we
accept the existence of God then it follows that His Word is necessarily
right. The question is where can that Word be found: in the Bible,
which, we are *told*, is inspired by God? Or in the Earth we live on,
and the sky above our heads - the things God directly created?
I see from some of

Darwin's stuff that the word of God is right; but I have not studied
either in detail and don't know my arse from a hole in the ground when
it comes to either; just some basics.

That's fine - and I'm not claiming to be an expert in genetics or
evolutionary theory. But I know enough to recognise the flaws in
Creationist arguments - and whether you accept the term or not, you have
made some of those arguments. I also know enough to understand some of
the limitations of evolutionary theory and the scientific method, and
what those limitations mean. For example, I know that there are 'gaps'
in the fossil chain we've discovered - and I know that those gaps don't
invalidate evolutionary theory in the slightest, much less prove the
truth of Genesis.

I'm not qualified to comment on that because I do not understand fully
what you are saying with regard to direction and de-evolving. What's
with the dolphins; aren't they a football team?

Dolphins were not always ocean-bound mammals. Once they were land-
dwellers, quite like dogs. But environmental pressures led to them
returning to the oceans and adapting accordingly. Still, they evolved
into a form that very strongly resembles fish - presumably because that
form is the 'fittest', the most beneficial for survival, in that
environment.
The point is that even if archaeopteryx evolved entirely independently of
other birds, it's not unreasonable to expect similar configurations to
emerge.

Well then it has to be true. Well, almost true. If Colonel Samantha
Carter (Stargate) says its true then it would have to be true; who can
argue with her smile.

Not entirely sure she's a good source for real-life information, but I
think you're probably right. Discussing evolution would probably be the
last thing on my mind in her presence. :o)

You cannot breed and elephant and a mouse and get a
mousey elephant; or a bat and a robin and get a batbird.

Well, the "Bible" is not the word of God if that is the book you are
referring to; only different versions of it which have been corrupted
by the editors of those versions.

More or less the problem I have with literalist interpretations of it. I
am a pantheist of sorts, so for me the cosmos IS 'God' (although I
wouldn't normally use the term and my 'God' bears no resemblance to that
of the Christians). But even in the case of Christianity, I would expect
believers to look to God Himself - either within their own souls or in
the world He has created - before they settle for getting their opinions
and beliefs from a book the provenance of which is so seriously
questionable.

Can't disagree with you, there. I would put it this way. God gave
and men corrupted what he gave and developed religious, political, and
philosophical programs from their own perversions. I don't understand
everything in the word of God even though I have been searching the
scriptures diligently for many many years. What I have learned is
that God wanted a family and did what necessary to cause one to be.
Within that family is much sibling rivalry.

An interesting interpretion, certainly.
.
User: "Midwinter"

Title: Re: Did Dinosaurs Turn Into Birds? 22 Jan 2008 04:39:25 AM
Midwinter <midwinter_m@hotmail.co.uk> said :

However, I question the use of

?
Not sure what happened there. As I recall it said something along the
lines of "I question the use of an element of the evolutionary process as a
means to contest the existence of that process".
Sorry about that.
.
User: "Bible Bob"

Title: Re: Did Dinosaurs Turn Into Birds? 22 Jan 2008 04:36:40 PM
On Tue, 22 Jan 2008 04:39:25 -0600, Midwinter
<midwinter_m@hotmail.co.uk> wrote:

Midwinter <midwinter_m@hotmail.co.uk> said :

However, I question the use of


?

Not sure what happened there. As I recall it said something along the
lines of "I question the use of an element of the evolutionary process as a
means to contest the existence of that process".

Sorry about that.

Midwinter,
I was wondering about that, too; but let it slide. There was enough
meat in the rest of your response.
BB
http://www.biblebob.net
Nothing so completely baffles one who is full of trick and duplicity
himself, than straightforward and simple integrity in another.
Charles Caleb Colton, author and clergyman (1780-1832)
.





User: "Steven J."

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 06:14:42 PM
On Jan 21, 10:58 am, Bible Bob <bible...@saintly.com> wrote:


-- [snip]


In order to know what the Bible says about the birds so that one could
compare what science says to what the Bible says one would have to
know what the Bible says.

Wouldn't it also help to know what science says about birds?


Some birds were made on day five and other birds were formed from the
earth on day six - water based and eath based forms of flesh; hence of
the different kinds of flesh spoken of in Corinthians.

Genesis 1:21-23 says, explicitly, that "God created the great
creatures of the sea and every living and moving thing with which the
water teems, according to their kinds, and every winged bird according
to its kind. ... And there was evening, and there was morning--the
fifth day."


1Co 15:39 KJV
All flesh is not the same flesh: but there is one kind of flesh of
men, another flesh of beasts, another of fishes, and another of birds.

This also seems to support a single creation for all birds. Paul
speaks of "one kind of flesh ... for birds," not two different kinds
of bird flesh. Of course, Paul wasn't really writing an essay on
taxonomy or comparative anatomy here, so there's no reason to assume
he was addressing the limits of evolution or the number of created
"kinds."


Isn't it suprising that goatherders knew about genetics, DNA, and
evolution before scientists.

I see nothing in these texts to show that the authors of the Bible, or
their contemporaries, knew anything about DNA, or indeed, about
biological heredity. Remember that passage in Genesis where Jacob
attempts to increase the number of spotted or striped kids born to his
goats by having the goats breed in front of striped or spotted
sticks. And if Paul had known about DNA, he would have been more
hesitant to declare that the physiological differences among "beasts"
were unimportant compared to the differences between "beasts" and
humans, when DNA comparisons show that humans are more genetically
similar to other apes than apes are to, say, cows or pigs.


Gen 1:20-23 KJV
20 And God said, Let the waters bring forth abundantly the moving
creature that hath life, and fowl that may fly above the earth in the
open firmament of heaven.
21 And God created great whales, and every living creature that
moveth, which the waters brought forth abundantly, after their kind,
and every winged fowl after his kind: and God saw that it was good.
22 And God blessed them, saying, Be fruitful, and multiply, and fill
the waters in the seas, and let fowl multiply in the earth.
23 And the evening and the morning were the fifth day.

Gen 2:19 KJV
19 And out of the ground the LORD God formed every beast of the
field, and every fowl of the air; and brought them unto Adam to see
what he would call them: and whatsoever Adam called every living
creature, that was the name thereof.

What creationists and scientists fail to consider is that some
creatures were brought forth from the water on day five and others
from the earth on day six. That is because they fail to blend the
information from chapter two with the information from chapter one to
get the whole story of the reconstruction (not creation) period.
Logically, creatures formed from the water and minerals in the oceans
and creatures from the ground of the earth with water added (Gen 2:6)
would be of different compositions and forms.

Why? On the one hand, pretty much the same elements are present in
the sea and on land. The proportions of those elements differs (as it
does from one part of the sea to another, or one region of land to
another, but then, there is nowhere on land or sea where a sample of
dirt or water will have the same elements in the same proportions as a
human being, or a canary, or a trout. So God is going to have to do
significant rearranging of His raw materials no matter what He starts
with.


Genesis speaks about reproduction within "kind"; hence evolution with
species which is the only true form of evolution. Even mutations ocur
within speicies. You cannot breed and elephant and a mouse and get a
mousey elephant; or a bat and a robin and get a batbird.

Mutations occur within individuals. They only compete for loci with
other alleles within species -- within sexually reproducing species,
that's pretty much what "species" means. But we know that there are
all degrees of interfertility and intersterility between different
populations, and, in fact, interfertility is not an infallible guide
to whether two populations belong to the same species: there are known
cases of pairs of species that CAN interbreed and produce fertile
offspring, but which rarely or never do so in nature. Given that
speciation has occurred and been noted in both the field and the lab,
it seems that "evolution within species ... is the only true form of
evolution" is either wrong, or depends on a non-standard definition of
"species." But the differences between a bat and a bird don't have to
arise within a single generation, or even within a million centuries
(it was more like three million centuries).


Archeologists may find the bones of former life forms from the former
earth but those are different kinds than the kinds of Genesis 1:2 to
Genesis 2:19. If the word of God is right (and it is) and if it is
rightly divided (which it is not) then both religionists and
scientists are wrong. The smart ones will go to the word of God for
answers and adapt their science to what the word of God says. Then
their science and religion will make sense. They won't get all the
answers; but they don't need them. Whether an animal existed before
or after the reconstruction period has no bearing on how to maintain
fellowship with God which is what the Bible is all about. The Bible
is not a history book or a science book; but contains both. It is a
collection of letters written for the purpose of fellowship with God.

BBhttp://www.biblebob.net

Nothing so completely baffles one who is full of trick and duplicity
himself, than straightforward and simple integrity in another.
Charles Caleb Colton, author and clergyman (1780-1832)

-- Steven J.
.



User: "Elmer"

Title: Re: Did Dinosaurs Turn Into Birds? 21 Jan 2008 09:45:36 AM
Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds

Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)

Isn't it rather silly to lie about something so easily checked? Pay particular
attention to the full abstract and its highlighted sentence in citation 16 below:
1: Alibardi L.
Keratinization of sheath and calamus cells in developing and regenerating
feathers.
Ann Anat. 2007;189(6):583-95.
2: Alibardi L, Knapp LW, Sawyer RH.
Beta-keratin localization in developing alligator scales and feathers in
relation to the development and evolution of feathers.
J Submicrosc Cytol Pathol. 2006 Jun-Sep;38(2-3):175-92.
3: Toni M, Valle LD, Alibardi L.
Hard (Beta-)keratins in the epidermis of reptiles: composition, sequence, and
molecular organization.
J Proteome Res. 2007 Sep;6(9):3377-92. Epub 2007 Aug 18. Review.
4: Alibardi L.
Cells of embryonic and regenerating germinal layers within barb ridges:
implication for the development, evolution and diversification of feathers.
J Submicrosc Cytol Pathol. 2006 Apr;38(1):51-76.
5: Alibardi L.
Structural and immunocytochemical characterization of keratinization in
vertebrate epidermis and epidermal derivatives.
Int Rev Cytol. 2006;253:177-259. Review.
6: Alibardi L, Dalla Valle L, Toffolo V, Toni M.
Scale keratin in lizard epidermis reveals amino acid regions homologous with
avian and mammalian epidermal proteins.
Anat Rec A Discov Mol Cell Evol Biol. 2006 Jul;288(7):734-52.
7: Alibardi L.
Cell structure of developing barbs and barbules in downfeathers of the chick:
Central role of barb ridge morphogenesis for the evolution of feathers.
J Submicrosc Cytol Pathol. 2005 Apr;37(1):19-41.
8: Xu X.
Palaeontology: scales, feathers and dinosaurs.
Nature. 2006 Mar 16;440(7082):287-8.
9: Sawyer RH, Rogers L, Washington L, Glenn TC, Knapp LW.
Evolutionary origin of the feather epidermis.
Dev Dyn. 2005 Feb;232(2):256-67. Review.
10: Hornik C, Krishan K, Yusuf F, Scaal M, Brand-Saberi B.
cDermo-1 misexpression induces dense dermis, feathers, and scales.
Dev Biol. 2005 Jan 1;277(1):42-50.
11: Alibardi L.
Dermo-epidermal interactions in reptilian scales: speculations on the evolution
of scales, feathers, and hairs.
J Exp Zoolog B Mol Dev Evol. 2004 Jul 15;302(4):365-83.
12: Sawyer RH, Knapp LW.
Avian skin development and the evolutionary origin of feathers.
J Exp Zoolog B Mol Dev Evol. 2003 Aug 15;298(1):57-72. Review.
13: Sawyer RH, Salvatore BA, Potylicki TT, French JO, Glenn TC, Knapp LW.
Origin of feathers: Feather beta (beta) keratins are expressed in discrete
epidermal cell populations of embryonic scutate scales.
J Exp Zoolog B Mol Dev Evol. 2003 Feb 15;295(1):12-24.
14: Prum RO, Brush AH.
The evolutionary origin and diversification of feathers.
Q Rev Biol. 2002 Sep;77(3):261-95. Review.
15: Harris MP, Fallon JF, Prum RO.
Shh-Bmp2 signaling module and the evolutionary origin and diversification of
feathers.
J Exp Zool. 2002 Aug 15;294(2):160-76.
16: Dev Biol. 2000 Mar 1;219(1):98-114.
"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." Widelitz RB, Jiang TX, Lu
J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.
We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis.
*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were induced.*
In feather tracts, short, wide, and curled feather buds with abnormal morphology
and random orientation formed. Epidermal invaginations and placode-like
structures formed in the scale epidermis. PCNA staining and the distribution of
molecular markers (SHH, NCAM, Tenascin-C) were characteristic of feather buds.
These results suggest that the beta-catenin pathway is involved in modulating
epithelial morphogenesis and that increased beta-catenin pathway activity can
increase the activity of skin appendage phenotypes. Analogies between regulated
and deregulated new growths are discussed. Copyright 2000 Academic Press.
17: Fraser RD, Parry DA.
The molecular structure of reptilian keratin.
Int J Biol Macromol. 1996 Oct;19(3):207-11.
.
User: ""

Title: Re: Did Dinosaurs Turn Into Birds? 25 Jan 2008 10:11:49 AM
Elmer wrote:

Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds


Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)


Isn't it rather silly to lie about something so easily checked? Pay
particular attention to the full abstract and its highlighted sentence
in citation 16 below:

1: Alibardi L.
Keratinization of sheath and calamus cells in developing and regenerating
feathers.
Ann Anat. 2007;189(6):583-95.

2: Alibardi L, Knapp LW, Sawyer RH.
Beta-keratin localization in developing alligator scales and feathers
in relation to the development and evolution of feathers.
J Submicrosc Cytol Pathol. 2006 Jun-Sep;38(2-3):175-92.

3: Toni M, Valle LD, Alibardi L.
Hard (Beta-)keratins in the epidermis of reptiles: composition,
sequence, and
molecular organization.
J Proteome Res. 2007 Sep;6(9):3377-92. Epub 2007 Aug 18. Review.

4: Alibardi L.
Cells of embryonic and regenerating germinal layers within barb ridges:
implication for the development, evolution and diversification of feathers.
J Submicrosc Cytol Pathol. 2006 Apr;38(1):51-76.

5: Alibardi L.
Structural and immunocytochemical characterization of keratinization in
vertebrate epidermis and epidermal derivatives.
Int Rev Cytol. 2006;253:177-259. Review.

6: Alibardi L, Dalla Valle L, Toffolo V, Toni M.
Scale keratin in lizard epidermis reveals amino acid regions homologous
with
avian and mammalian epidermal proteins.
Anat Rec A Discov Mol Cell Evol Biol. 2006 Jul;288(7):734-52.

7: Alibardi L.
Cell structure of developing barbs and barbules in downfeathers of the
chick:
Central role of barb ridge morphogenesis for the evolution of feathers.
J Submicrosc Cytol Pathol. 2005 Apr;37(1):19-41.

8: Xu X.
Palaeontology: scales, feathers and dinosaurs.
Nature. 2006 Mar 16;440(7082):287-8.

9: Sawyer RH, Rogers L, Washington L, Glenn TC, Knapp LW.
Evolutionary origin of the feather epidermis.
Dev Dyn. 2005 Feb;232(2):256-67. Review.

10: Hornik C, Krishan K, Yusuf F, Scaal M, Brand-Saberi B.
cDermo-1 misexpression induces dense dermis, feathers, and scales.
Dev Biol. 2005 Jan 1;277(1):42-50.

11: Alibardi L.
Dermo-epidermal interactions in reptilian scales: speculations on the
evolution
of scales, feathers, and hairs.
J Exp Zoolog B Mol Dev Evol. 2004 Jul 15;302(4):365-83.

12: Sawyer RH, Knapp LW.
Avian skin development and the evolutionary origin of feathers.
J Exp Zoolog B Mol Dev Evol. 2003 Aug 15;298(1):57-72. Review.

13: Sawyer RH, Salvatore BA, Potylicki TT, French JO, Glenn TC, Knapp LW.
Origin of feathers: Feather beta (beta) keratins are expressed in discrete
epidermal cell populations of embryonic scutate scales.
J Exp Zoolog B Mol Dev Evol. 2003 Feb 15;295(1):12-24.

14: Prum RO, Brush AH.
The evolutionary origin and diversification of feathers.
Q Rev Biol. 2002 Sep;77(3):261-95. Review.

15: Harris MP, Fallon JF, Prum RO.
Shh-Bmp2 signaling module and the evolutionary origin and
diversification of
feathers.
J Exp Zool. 2002 Aug 15;294(2):160-76.

16: Dev Biol. 2000 Mar 1;219(1):98-114.

"beta-catenin in epithelial morphogenesis: conversion of part of avian
foot scales into feather buds with a mutated beta-catenin." Widelitz RB,
Jiang TX, Lu J, Chuong CM. Department of Pathology, School of Medicine,
Los Angeles, California, 90033, USA.

We explored the role of beta-catenin in chicken skin morphogenesis.
Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia
over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic
patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing
chicken skin from the RCAS retrovirus. This produced a variety of
phenotypic changes during epithelial appendage morphogenesis.

*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were
induced.*

In feather tracts, short, wide, and curled feather buds with abnormal
morphology and random orientation formed. Epidermal invaginations and
placode-like structures formed in the scale epidermis. PCNA staining and
the distribution of molecular markers (SHH, NCAM, Tenascin-C) were
characteristic of feather buds. These results suggest that the
beta-catenin pathway is involved in modulating epithelial morphogenesis
and that increased beta-catenin pathway activity can increase the
activity of skin appendage phenotypes. Analogies between regulated and
deregulated new growths are discussed. Copyright 2000 Academic Press.

17: Fraser RD, Parry DA.
The molecular structure of reptilian keratin.
Int J Biol Macromol. 1996 Oct;19(3):207-11.

Yes, T-rex was a big parrot.
--
Blattus Slafaly ? 3 :) 7/8
.

User: "Gabriel"

Title: Re: Did Dinosaurs Turn Into Birds? 26 Jan 2008 11:35:33 AM
On Mon, 21 Jan 2008 15:45:36 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds

Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)


Isn't it rather silly to lie about something so easily checked? Pay particular
attention to the full abstract and its highlighted sentence in citation 16 below:

Ok then, let's talk about item 16 in your list:
[cut]

16: Dev Biol. 2000 Mar 1;219(1):98-114.

"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." Widelitz RB, Jiang TX, Lu
J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.

We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis.

*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were induced.*

In feather tracts, short, wide, and curled feather buds with abnormal morphology
and random orientation formed. Epidermal invaginations and placode-like
structures formed in the scale epidermis. PCNA staining and the distribution of
molecular markers (SHH, NCAM, Tenascin-C) were characteristic of feather buds.
These results suggest that the beta-catenin pathway is involved in modulating
epithelial morphogenesis and that increased beta-catenin pathway activity can
increase the activity of skin appendage phenotypes. Analogies between regulated
and deregulated new growths are discussed. Copyright 2000 Academic Press.

Since you are the one claiming this is proof of what you think it
is, it follows that you must completely understand everything
said to make this claim of yours. If you didn't understand it, or
barely understood it, or merely thought you understood it, you
could not honestly make such a bold claim. So if you would be so
kind as to give a line by line recap of exactly what *you* think
was just said, and we can go from there.
Also, if you could provide an online reference so I can read this
straight from the source for myself, that would be great. Thanks!
.
User: "Elmer"

Title: Re: Did Dinosaurs Turn Into Birds? 26 Jan 2008 11:58:10 AM
Gabriel wrote:

On Mon, 21 Jan 2008 15:45:36 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds

Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)

Isn't it rather silly to lie about something so easily checked? Pay particular
attention to the full abstract and its highlighted sentence in citation 16 below:


Ok then, let's talk about item 16 in your list:

[cut]

16: Dev Biol. 2000 Mar 1;219(1):98-114.

"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." Widelitz RB, Jiang TX, Lu
J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.

We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis.

*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were induced.*

In feather tracts, short, wide, and curled feather buds with abnormal morphology
and random orientation formed. Epidermal invaginations and placode-like
structures formed in the scale epidermis. PCNA staining and the distribution of
molecular markers (SHH, NCAM, Tenascin-C) were characteristic of feather buds.
These results suggest that the beta-catenin pathway is involved in modulating
epithelial morphogenesis and that increased beta-catenin pathway activity can
increase the activity of skin appendage phenotypes. Analogies between regulated
and deregulated new growths are discussed. Copyright 2000 Academic Press.

Since you are the one claiming this is proof of what you think it
is, it follows that you must completely understand everything
said to make this claim of yours. If you didn't understand it, or
barely understood it, or merely thought you understood it, you
could not honestly make such a bold claim. So if you would be so
kind as to give a line by line recap of exactly what *you* think
was just said, and we can go from there.

You claimed: "no mechanism to change scales into feathers" These scientists
inserted beta-catenin protein into developing chicken skin scales. They found that:
"In ... scale-producing regions, new feather buds with normal-appearing follicle
sheaths, dermal papillae, and barb ridges were induced."

Also, if you could provide an online reference so I can read this
straight from the source for myself, that would be great. Thanks!

It's from the March 2000 issue of "Developmental Biology", a journal published
by Elsevier, pages 98-114 for the full article. This publication should be
available in any fairly well equipped university library near you. Failing that
it's a 1.5 mg PDF file that you can find here:
http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%236766%232000%23997809998%23303193%23FLP%23&_cdi=6766&_pubType=J&_auth=y&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1c0f4d72e1dc7b8323135bf80504957f
Watch the wrap.
Look for article number 8 and then you can download the full article.
.
User: "Gabriel"

Title: Re: Did Dinosaurs Turn Into Birds? 29 Jan 2008 07:58:36 PM
On Sat, 26 Jan 2008 17:58:10 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

On Mon, 21 Jan 2008 15:45:36 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds

Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)

Isn't it rather silly to lie about something so easily checked? Pay particular
attention to the full abstract and its highlighted sentence in citation 16 below:


Ok then, let's talk about item 16 in your list:

[cut]

16: Dev Biol. 2000 Mar 1;219(1):98-114.

"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." Widelitz RB, Jiang TX, Lu
J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.

We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis.

*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were induced.*

In feather tracts, short, wide, and curled feather buds with abnormal morphology
and random orientation formed. Epidermal invaginations and placode-like
structures formed in the scale epidermis. PCNA staining and the distribution of
molecular markers (SHH, NCAM, Tenascin-C) were characteristic of feather buds.
These results suggest that the beta-catenin pathway is involved in modulating
epithelial morphogenesis and that increased beta-catenin pathway activity can
increase the activity of skin appendage phenotypes. Analogies between regulated
and deregulated new growths are discussed. Copyright 2000 Academic Press.


Since you are the one claiming this is proof of what you think it
is, it follows that you must completely understand everything
said to make this claim of yours. If you didn't understand it, or
barely understood it, or merely thought you understood it, you
could not honestly make such a bold claim. So if you would be so
kind as to give a line by line recap of exactly what *you* think
was just said, and we can go from there.


You claimed: "no mechanism to change scales into feathers" These scientists
inserted beta-catenin protein into developing chicken skin scales.

Chickens don't have feathers?

They found that:

"In ... scale-producing regions, new feather buds with normal-appearing follicle
sheaths, dermal papillae, and barb ridges were induced."

Also, if you could provide an online reference so I can read this
straight from the source for myself, that would be great. Thanks!


It's from the March 2000 issue of "Developmental Biology", a journal published
by Elsevier, pages 98-114 for the full article. This publication should be
available in any fairly well equipped university library near you. Failing that
it's a 1.5 mg PDF file that you can find here:

http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%236766%232000%23997809998%23303193%23FLP%23&_cdi=6766&_pubType=J&_auth=y&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=1c0f4d72e1dc7b8323135bf80504957f

Watch the wrap.

Look for article number 8 and then you can download the full article.

.
User: "Elmer"

Title: Re: Did Dinosaurs Turn Into Birds? 29 Jan 2008 09:55:18 PM
Gabriel wrote:

On Sat, 26 Jan 2008 17:58:10 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

On Mon, 21 Jan 2008 15:45:36 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds

Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)

Isn't it rather silly to lie about something so easily checked? Pay particular
attention to the full abstract and its highlighted sentence in citation 16 below:

Ok then, let's talk about item 16 in your list:

[cut]

16: Dev Biol. 2000 Mar 1;219(1):98-114.

"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." Widelitz RB, Jiang TX, Lu
J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.

We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis.

*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were induced.*

In feather tracts, short, wide, and curled feather buds with abnormal morphology
and random orientation formed. Epidermal invaginations and placode-like
structures formed in the scale epidermis. PCNA staining and the distribution of
molecular markers (SHH, NCAM, Tenascin-C) were characteristic of feather buds.
These results suggest that the beta-catenin pathway is involved in modulating
epithelial morphogenesis and that increased beta-catenin pathway activity can
increase the activity of skin appendage phenotypes. Analogies between regulated
and deregulated new growths are discussed. Copyright 2000 Academic Press.

Since you are the one claiming this is proof of what you think it
is, it follows that you must completely understand everything
said to make this claim of yours. If you didn't understand it, or
barely understood it, or merely thought you understood it, you
could not honestly make such a bold claim. So if you would be so
kind as to give a line by line recap of exactly what *you* think
was just said, and we can go from there.

You claimed: "no mechanism to change scales into feathers" These scientists
inserted beta-catenin protein into developing chicken skin scales.

Chickens don't have feathers?

They found that:
"In ... scale-producing regions, new feather buds with normal-appearing follicle
sheaths, dermal papillae, and barb ridges were induced."

Note the line "scale-producing regions" above.
.
User: "Gabriel"

Title: Re: Did Dinosaurs Turn Into Birds? 29 Jan 2008 11:19:13 PM
On Wed, 30 Jan 2008 03:55:18 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

On Sat, 26 Jan 2008 17:58:10 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

On Mon, 21 Jan 2008 15:45:36 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds

Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)

Isn't it rather silly to lie about something so easily checked? Pay particular
attention to the full abstract and its highlighted sentence in citation 16 below:

Ok then, let's talk about item 16 in your list:

[cut]

16: Dev Biol. 2000 Mar 1;219(1):98-114.

"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." Widelitz RB, Jiang TX, Lu
J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.

We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis.

*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were induced.*

In feather tracts, short, wide, and curled feather buds with abnormal morphology
and random orientation formed. Epidermal invaginations and placode-like
structures formed in the scale epidermis. PCNA staining and the distribution of
molecular markers (SHH, NCAM, Tenascin-C) were characteristic of feather buds.
These results suggest that the beta-catenin pathway is involved in modulating
epithelial morphogenesis and that increased beta-catenin pathway activity can
increase the activity of skin appendage phenotypes. Analogies between regulated
and deregulated new growths are discussed. Copyright 2000 Academic Press.

Since you are the one claiming this is proof of what you think it
is, it follows that you must completely understand everything
said to make this claim of yours. If you didn't understand it, or
barely understood it, or merely thought you understood it, you
could not honestly make such a bold claim. So if you would be so
kind as to give a line by line recap of exactly what *you* think
was just said, and we can go from there.

You claimed: "no mechanism to change scales into feathers" These scientists
inserted beta-catenin protein into developing chicken skin scales.


Chickens don't have feathers?


They found that:
"In ... scale-producing regions, new feather buds with normal-appearing follicle
sheaths, dermal papillae, and barb ridges were induced."


Note the line "scale-producing regions" above.

Note that chicken have feathers. So they artificially get
chickens that have feathers to grow feathers. This proves
absolutely nothing.
Get a creature who doesn't have feathers, who's ancestor's never
had feathers to grow feathers, then you might finally be on to
something.
.
User: "Elmer"

Title: Re: Did Dinosaurs Turn Into Birds? 30 Jan 2008 07:30:56 AM
Gabriel wrote:

On Wed, 30 Jan 2008 03:55:18 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

On Sat, 26 Jan 2008 17:58:10 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

On Mon, 21 Jan 2008 15:45:36 GMT, Elmer
<nylicens@frontiernet.net> wrote:

Gabriel wrote:

http://www.answersingenesis.org/articles/nab/did-dinosaurs-turn-into-birds

Partial outline of the scientific discussion:

Problems with Dinosaurs Evolving into Birds
- Warm-blooded vs. cold-blooded
- “Bird-hipped” vs. “lizard-hipped” dinosaurs
- The three-fingered hand
- Avian vs. reptilian lung

Origin of Feathers
- Do feathered dinosaurs exist?
- Feathers and scales are dissimilar.

Archaeopteryx, a True Bird, Is Older than the “Feathered”
Dinosaurs.

Origin of Flight

Part of the conclusion:
" Having a true bird appear before alleged feathered dinosaurs,
no mechanism to change scales into feathers,...(snip rest)

Isn't it rather silly to lie about something so easily checked? Pay particular
attention to the full abstract and its highlighted sentence in citation 16 below:

Ok then, let's talk about item 16 in your list:

[cut]

16: Dev Biol. 2000 Mar 1;219(1):98-114.

"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." Widelitz RB, Jiang TX, Lu
J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.

We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis.

*In apteric and scale-producing regions, new feather buds with
normal-appearing follicle sheaths, dermal papillae, and barb ridges were induced.*

In feather tracts, short, wide, and curled feather buds with abnormal morphology
and random orientation formed. Epidermal invaginations and placode-like
structures formed in the scale epidermis. PCNA staining and the distribution of
molecular markers (SHH, NCAM, Tenascin-C) were characteristic of feather buds.
These results suggest that the beta-catenin pathway is involved in modulating
epithelial morphogenesis and that increased beta-catenin pathway activity can
increase the activity of skin appendage phenotypes. Analogies between regulated
and deregulated new growths are discussed. Copyright 2000 Academic Press.

Since you are the one claiming this is proof of what you think it
is, it follows that you must completely understand everything
said to make this claim of yours. If you didn't understand it, or
barely understood it, or merely thought you understood it, you
could not honestly make such a bold claim. So if you would be so
kind as to give a line by line recap of exactly what *you* think
was just said, and we can go from there.

You claimed: "no mechanism to change scales into feathers" These scientists
inserted beta-catenin protein into developing chicken skin scales.

Chickens don't have feathers?

They found that:
"In ... scale-producing regions, new feather buds with normal-appearing follicle
sheaths, dermal papillae, and barb ridges were induced."

Note the line "scale-producing regions" above.


Note that chicken have feathers. So they artificially get
chickens that have feathers to grow feathers. This proves
absolutely nothing.

Get a creature who doesn't have feathers, who's ancestor's never
had feathers to grow feathers, then you might finally be on to
something.

Oh well, if you can't understand what they did, there's not much I can do. But
for lurkers reading this thread here's another more pointed citation:
Dev Biol. 2000 Mar 1;219(1):98-114.
"beta-catenin in epithelial morphogenesis: conversion of part of avian foot
scales into feather buds with a mutated beta-catenin." By Widelitz RB, Jiang TX,
Lu J, Chuong CM. Department of Pathology, School of Medicine, Los Angeles,
California, 90033, USA.
We explored the role of beta-catenin in chicken skin morphogenesis. Initially
beta-catenin mRNA was expressed at homogeneous levels in the epithelia over a
skin appendage tract field which became transformed into a periodic pattern
corresponding to individual primordia. The importance of periodic patterning was
shown in scaleless mutants, in which beta-catenin was initially expressed
normally, but failed to make a punctuated pattern. To test beta-catenin
function, a truncated armadillo fragment was expressed in developing chicken
skin from the RCAS retrovirus. This produced a variety of phenotypic changes
during epithelial appendage morphogenesis. In apteric and scale-producing
regions, new feather buds with normal-appearing follicle sheaths, dermal
papillae, and barb ridges were induced. In feather tracts, short, wide, and
curled feather buds with abnormal morphology and random orientation formed.
Epidermal invaginations and placode-like structures formed in the scale
epidermis. PCNA staining and t