Southern Ancestry in "Steppe"

[Mrarsg13]

the admixture associated with ANE -TTK was well preserved either in the far north or among the isolated mountainous peoples of Central Asia (Tajikistan) or the Caucasus (mainly its peak in Dagestan)

 

[Anfänger]

Let’s not derail this thread again.

 

[Mrarsg13]

I don't understand you

Let’s not derail this thread again.

 

[Mrarsg13]

Let’s not derail this thread again.

these simulated steppe CHGs of yours are complete nonsense, do you know why? they have absolutely no ANE admixture associated with the North Caucasus, plus you have a bit of an Anatolian shift, which was practically absent in the Neolithic and Chalcolithic steppes!

 

[Anfänger]

After the new paper focusing on the steppe, it was time to add new findings and samples that prove my point in this thread.
One sample of interest is a new Eneolithic sample from the Lower Don, a potential place where a migration from south of the Caucasus might have taken place roughly about 6000 BC. The sample is from Krivyanskiy (individual ID I11828): 4359-4251 calBCE :


That's much younger than the supposed migration of these southern Caucasus people to the Lower Don but at least for now there isn't any better sample. The interesting thing about this sample is that in distal modeling it is about 60% CHG without the second wave of Aknashen-related ancestry and more importantly it is the first sample with J2a from the Eneolithic Steppe alongside one J1 from Khavlynsk.

Y-DNA and mtDNA:
It's the subclade of J-M319:
https://www.yfull.com/tree/J-M319/
By looking at the information from Yfull, its modern distribution and the basal clades imply an origin in Westasia.
Its mt-haplogroup is T2a1b:
https://www.yfull.com/mtree/T2a1b/
It shares the same clade as Vunyuchka, one of the already published Steppe_Eneolithic samples.

In the paper they don't differentiate between CHG or Iran_N and just use the term CHG, so I am still waiting for genotype and G25 data to test if this sample has just Kotias-type CHG or a CHG-type somewhat shifted towards the Iran_N cluster which could indicate an origin in Armenia and/or Azerbaijan.

The Krivyanskiy sample is finally published and my impression that this sample has ancestry from south the Caucasus was correct. It isn't just the typical Kotias-type CHG but somewhat shifted towards the Iran_N cluster which in my opinion points to an origin, for the first wave of southern ancestry, from the south eastern Caucasus which is Armenia and/or Azerbaijan. Here is the sample in distal modeling:

Like always with G25 it underestimates southern ancestry in steppe samples but this isn't much important to my point. Also, it doesn't have any ancestry from Central Asia like other samples from the same time period from steppe regions.

Interestingly, there is a paper soon to be published from Ghalichi et al. which has an sample from the Northern Caucasus (6200BC) which is a fully EHG. This further proofs my point that there was indeed a migration from south of the Caucasus. I feel vindicated.