Michael Cerny (
23 May 1995 23:26:41 GMT wrote:
>NE>( writes:
>NE>>No doubt, but incestuous and close cousin fertilization also greatly
>NE>>increases the chances of the zygote's getting two copies of some
>NE>>catastrophic recessive gene.
>NE>For this "incest taboo" theory of yours to hold, you have to explain
>NE>why so many isolated and otherwise culturally diverse people who know
>NE>nothing whatsoever about either zygotes or recessive genes, hold so
>NE>consistently nevertheless to the idea of incest being a crime.
>Perhaps they do so because they have noticed that the gods punish sister
>and brother hanky-panky by sending dorked babies? <g>

Or perhaps because more children from incestuous unions die early. This
would cause an evolutionary slant away from those with incestuous tendencies.
For those into evolutionary psychology, there are quite a few tomes that
speak to this issue (and unfortunately, I can't remember what any of them are
at the moment.)