Quote:
Originally Posted by HungLikeJesus
Incest among animals is very common, so I would say that our reaction is learned.
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I don't doubt there's a lot of truth in that. But it seems like a tendency to inbreed would be undesirable from an evolutionary standpoint... in the long run wouldn't those who went out and mixed up the gene pool win out? So I would think there is some biological basis to it.