--- In
cybalist@yahoogroups.com, "tgpedersen" <tgpedersen@...> wrote:
>
> --- In cybalist@yahoogroups.com, "andrew_and_inge"
> <andrew.lancaster@> wrote:
> >
> > --- In cybalist@yahoogroups.com, "tgpedersen" <tgpedersen@> wrote:
> >
> > > Eastern European and Central Asian genes spreading around
Europe
> > > from Scandinavia and what is now Northern Germany ? Huh?
> > >
> > > Naively I would assume that if Eastern European and Central
> Asian
> > > genes were spreading around Europe they would have come from
> Eastern
> > > Europea and Central Asia.
> >
> > Sorry, for "from", put "via".
> >
>
> "via" doesn't unpuzzle me. Elucidation, please.
After thinking about it, I presume you are wondering how geneticists
could see that a haplotype is spread from A to B *via* C. Actually,
it is a little like studying language spreading. Consider a language
family "x"...
1. Out of the 3 regions, the most diversity is in region A.
2. The second most diversity is in region C, and they all appear to
to fit within one sub-clade in region A.
3. The third most diversity is in region B, and they all seem to be
subsets of the ones in region C.
Add to that, that we know C is geographically between A and B, and
that there were no to be population movements between A and C on the
one hand and B and C on the other.
The Y DNA signature called R1a for example is very diverse in Central
Asia and into Russia and the Caucases. However a small subset of
types are present in Scandinavia. Of these 1 or 2 are reasonably
common in Western Scotland, but less common than in Scandinavia (one
of these is shared by many MacDonalds, whose common ancestor Somerled
was a military leader in a time of heavy Norse involvement in his
region).
Best Regards
Andrew Lancaster