>
> A new highly publicized
but with lukewarm reception from experts in the field
study by scientists at the Broad Institute of MIT
> and Harvard indicates that humans and chimps underwent an evolutionary
> split less than 5.4 million years ago, much more recently than previously
> thought.
I have yet to encounter convincing evidence that molecular clocks can be
reliable enough to give precision like that, despite the persistant use of
such calculations by molecular biologists.
>"Field studies demonstrate that hybrid populations die off. <
Some do; others form new species; others persist at low levels. Even if
they die off, this does not prevent transfer of a few genes to occur via
hybridization. Thus, the conclusions are unjustified.
Perhaps this reflects the fact that none of the spokesman's cited
qualifications were in biology or evolution.
-- Dr. David Campbell 425 Scientific Collections University of Alabama "I think of my happy condition, surrounded by acres of clams"Received on Thu May 25 12:59:00 2006
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