From: Ben McGarr
Message: 886
Date: 2003-07-28
>But very specific mutations of particular alleles, as concern us
> One of the problems with using a trait like hair color to try to
> trace population movements is precisely that various types are each
> advantageous in some environments and detrimental in others, thus
> subject to natural selection. That can seriously skew the findings.
> Generally geneticists try to find a variation which is neutral in
> regard to natural selection.
>
> Regards,
> Ned Smith