Alan
Elite member
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- Ethnic group
- Kurdish
- Y-DNA haplogroup
- R1a1a1
- mtDNA haplogroup
- HV2a1 +G13708A
Isn't some of this just a function of how ADMIXTURE works? The "North Euro" cluster is the set of alleles "modal" or most common in Northern Europe today. It "hides" within it alleles from past migrations and more "basal" groups. Wouldn't any "Gedrosia" or "West Asian" or any other cluster of alleles show up only if they were in addition to or excess over whatever is aggregated into the North Euro cluster? Take a look at the second graphic: K12b expressed as a mixture of K7b components. "North Euro" there looks to have about 10% "West Asian". Or look at K12b for a comparison in terms of the World 9 components. So far as I know, in these runs "North Euro" is actually Northeast Euro. So, doesn't it stand to reason that "Northwest Euro" would show an excess of some more southern or southeastern "components"? What is showing in these runs could just be the excess.
That doesn't mean that there aren't some differences based on different migration patterns and the gradual dilution of the Yamnaya Indo-European autosomal signature as time went on, as Maciamo pointed out. There's also the explicit statement in the body of the Haak et al paper that there was a "resurgence" in pre-Yamnaya ancestry. Some of that "resurgence" might just be that the "autochonous" stock as they would be defined at that time weren't being buried in tombs that would have survived.
As to the Baltic area, Finland in particular, or even some of the northern forest steppe areas, I do think that their actual "Yamnaya Indo-European" descent genetically might not be as high as it appears in Figure 3 of the paper, because that's partly just reflecting their high levels of EHG. They seem to have gotten some effect from Yamnaya, however. Some of their 44% EN has to come via Yamnaya. I don't think the TRB got that far, and even if they did, I doubt they were numerous enough to have that kind of impact all the way into the Baltics and Finland. Plus, the mtDna in that part of the world is different from that in western Europe. It has a more specifically "West Asian" cast, as opposed to Cardial and LBK, as if it came due north from the Near East.
Culturally, of course, they adopted the "Yamnaya Indo-European" package of the groups to their south. I'm not sure about the language. Could it have been Uralic? This is wild speculation, but look at the EDAR results in SHG. If that is accurate, it's far too early to be attributed to recent gene flow from Siberia.
I'm not married to any of these ideas, of course. I'm just trying to use what I know of admixture to correlate those results with what I know is closer to the "truth"...i.e. the formal stats in Haak et al.
So it could simply be that Northeast Europeans are "Indo Europinized" local H&G and Farmers. That is a possibility. I don't think Uralic had yet evolved.
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