Re: Scientific theory

On Mon, 20 Dec 2004 09:39:12 -0800 (PST) Wayne Shelton <wdshel@yahoo.com>
writes:
> Isn't there a variation similar to this in
> azaleas in the Appalachians Mountains? I seem to
> remember that from Grad school in Knoxville many
> years ago. The the nearby populations were able
> to cross pollinate, but the distant ones were
> genetically different so as to not allow
> reproduction.
>
> Wayne
>
>
>
> --- Don Winterstein <dfwinterstein@msn.com>
> wrote:
>
> > Question: I understand you to imply that the
> > definition of species involves any kind of
> > "reproductive isolation." In your example, the
> > isolation would be mechanical, not genetic.
> > Presumably the definition would not include
> > simple geographic isolation, even though
> > geographic isolation is known to lead to new
> > species. Correct?
> >
> > Don
> >
I'm trying to recall Goldschmitt's (?) book back in the '40s. I think
/Lymantria/ (gypsy moth) is circumpolar. Near populations are fully
interfertile, but more distant populations produce strange and infertile
hybrids.
Dave
Received on Mon Dec 20 13:47:19 2004