Posted by:
Tony D
at Fri Nov 11 10:39:50 2011 [ Email Message ] [ Show All Posts by Tony D ]
In any given case, can we authoritatively discuss gene flow without a full understanding of the rate of climate change? We’re throwing around terms like millions of years when in fact < 10,000 years might go a long long way towards creating or eliminating barriers of unsuitable habitat. I’ve heard the desert SW was quite different a mear thousand years ago. As Doug pointed out, on a 67’ long timeline, man has been here a quarter of an inch. I’m not sure we can measure a few thousand years or even if the separation that occurs in that time frame is meaningful. ----- “Nothing is at last sacred but the integrity of your own mind.” Emmerson
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