SETI bioastro: Macroevolution demonstrationconfirms Darwin?

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From: Brig Klyce (bklyce@panspermia.org)
Date: Sat Feb 16 2002 - 08:21:45 PST


It is claimed that a recent demonstration of macroevolution answers a
major challenge to darwinism by creationists. According to the UCSD
press release, the scientists at the University of California, San
Diego, "have uncovered the first genetic evidence that explains how
large-scale alterations to body plans were accomplished during the early
evolution of animals." Their experiment "shows how new animal body plans
could arise from a simple genetic mutation...."

It sounds impressive, but it isn't. Reading on, we learn, "The
scientists showed how modifications in the Hox gene Ubx... would have
allowed the crustacean-like ancestors of Artemia, with limbs on every
segment, to lose their hind legs...." So a simple mutation could have
caused the loss of limbs. This result might count as an example of
macroevolution, but not of macroevolutionary _progress_. For that, the
result would have to be something like limbs on a creature than had none
before. Such evolutionary steps have not been shown to be produced by
simple mutations. I wish this challenge to darwinism were better
recognized.

Brig Klyce
Acorn Enterprises LLC
http://www.panspermia.org


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