Carl Zimmer doesn't post a heck of a lot on his blog at www.scienceblogs.com/loom,
but when he does post, it's usually very interesting. And sometimes
quite startling. Consider the paddlefish:
http://tinyurl.com/2e9qjc
"When the fin of a paddlefish starts to form, Hox genes become active
in the bud in the same pattern shared by zebrafish and tetrapods. But
when zebrafish fins stop, the paddlefish fin keeps going. Its Hox
genes produce the same late-stage pattern that defines our own hands
and feet."
Why would an intelligent designer deliberately create a fish with even
early stage genetic systems for limb development, let alone late
stage?
Or is it that what we see isn't design at all, but evolution - just as
the Theory of Evolution asserts (with 150 years of scientific support)
- and what we're seeing is genes that arose for one system being co-
opted over time for another, completely different system?
Budikka
.
|
