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Re: Re: Swimming mammoths and climate change
On Thu, 11 Apr 1996, th81 wrote:
> >>5)Inevitable interbreeding leading to genetic mutation, sterility and
"Interbreeding" is necessary for any sort of sexual reproduction. It's
*inbreeding* that you need to worry about.
> This is a common misconception. Small populations WILL drift from the
> mainstream, true. However, this does not necessarily lead to sterility and
> extinction. In many cases (as many as there have been allopatric
> speciations), the small population drifted far enough so that they were no
> longer reproductively compatible with the mainstream.
Right. A certain amount of inbreeding is necessary for any single
mutation to be spread throughout a population. As I sometimes like to
say (and I like to see the look on people's faces when I do), "Inbreeding
is the stuff of evolution."
> Thomas R. Holtz, Jr.
Pacific Lutheran University
Tacoma, WA 98447