Terry is right.

Terry McDonough wrote:
> Actually, Jim has the details wrong.  The idea is that you prefer mates who 
> look like your parents.  This is for perhaps psychological and not survival 
> reasons.  This is about the origin of differences in appearance not their 
> perpetuation.  This kind of selection produces feedback effects which can 
> produce morphological differences among isolated populations that have 
> nothing to do with adapting to different evironments.  This includes skin 
> color. Once these isolated populations mix other forces, e.g. racism, lust, 
> other psychological factors, etc can easily be more determinant.<
-- 
Jim Devine / "If heart-aches were commercials, we'd all be on TV." -- John Prine
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