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Politics : Formerly About Advanced Micro Devices
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To: SilentZ who wrote (802909)8/20/2014 11:42:16 AM
From: combjelly  Read Replies (1) of 1582527
 
Bottom line -- if a change happens among humans in like, a millennium or less (probably even more than that), it isn't a genetic factor, it's environmental.

It depends on the selection pressures. The Ashkenazi Jews concentrated several genetic disorders that helped them adapt to the crowded, unsanitary conditions in the ghettos. For example, Tay-Sachs confers a resistance to TB if you only carry one gene. That probably was on the scale of less than a millennium.
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