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Old 05-19-2012, 06:14 AM   #14
Indoendris

Join Date
Nov 2005
Posts
453
Senior Member
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Actually, we don't know. Perhaps hemophilia genes could confer resistance to some undiscovered diseases. Besides, a combination of seemingly deleterious genes could actually give place to a new, more adaptive organ or structure. For example, the trunk of the elephants must have looked like a deformity at the very beginning, but afterwards it became a useful structure.
Okay, but what about the diseases that cause the seemingly healthy 14 year old athlete to keel over and die during a warm up? Those can't possibly have any benefits. What about certain cancers that are genetic? How can those be good?
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