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Originally Posted by
mmoose
It seems that the G people were at one time abundant in Europe but at some point retreated into isolated places such valleys in the Tyrol.

Originally Posted by
taiabafa
hi, we were so many in the Neolithic, but with the arrival of R1 in Europe we were gone and we retired to the mountains ... to you the conclusions.
The mountains were indeed good "refuges", but I'm not sure about "retreating". Perhaps at some degree, but it also may be that mountains were just more prone to continuity.
As for the arrival of people rich in R1, indeed it was a "course changing" for "Gs". For the sake of comparison, consider that G2 and R1b have both a TMRCA of abt. 20k years. Based on YFull data, imagine that at about 6800 years ago G2 as a whole had more than 40 lineages that survived to our days. R1b had about the half, if I checked it right. And we know what happened after that. ;)