berun
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Just i red the paper "Mapping Post-Glacial expansions: The Peopling of Southwest Asia" (here), and the interesting point is:
they include var and freq maps to sure their claims.
The article fails to comment that there are ancient J's that confirm their claims: Satsurbila and Kotias in paleolithic Georgia (J1 and J2a), and Huto Cave in the Zagros (J2a).
The interesting case is that even if the authors complain about the apparent lack of J's in Yamnayans, there was a Mesolithic J1 in Karelia dated to about 5250 BC. As this man has now clear origins in the Caucasus it's possible to ask:
his clade arrived to Karelia from the North Caucasus after the rise of temperatures? or his clade arrived there with a Neolithic expansion from the Fertile Crescent / Caucasus that went northwards?
in whichever case as this man was J1 he was carrying surely CHG autosomals, and as Yamnayans were half CHG half EHG, there are a lot of possible similar admixtures to find out in the path to the northernmost European territory. So then, as it's stated that the (eastern) Yamnayans can't be the source for the admixture in the Corded Ware, we can find out the source pop in North Russia...?
Due to the phylogenetic relationship between J1 and J2 markers, the TMRCAs for these are identical. The J1 and J2 split shows deepest time in the Caucasus, Syria and Turkey at 8.9 ka and 8.4 ka, respectively.
Our study has identified the Caucasus refugium as the likely source for the J1 and J2 haplogroups that now dominate Southwest Asia, and previously appeared to mark the Neolithic Revolution’s expansion into Europe. Yet, haplogroups J1 and J2 are distinctly lacking in the earlier Yamnaya samples.
they include var and freq maps to sure their claims.
The article fails to comment that there are ancient J's that confirm their claims: Satsurbila and Kotias in paleolithic Georgia (J1 and J2a), and Huto Cave in the Zagros (J2a).
The interesting case is that even if the authors complain about the apparent lack of J's in Yamnayans, there was a Mesolithic J1 in Karelia dated to about 5250 BC. As this man has now clear origins in the Caucasus it's possible to ask:
his clade arrived to Karelia from the North Caucasus after the rise of temperatures? or his clade arrived there with a Neolithic expansion from the Fertile Crescent / Caucasus that went northwards?
in whichever case as this man was J1 he was carrying surely CHG autosomals, and as Yamnayans were half CHG half EHG, there are a lot of possible similar admixtures to find out in the path to the northernmost European territory. So then, as it's stated that the (eastern) Yamnayans can't be the source for the admixture in the Corded Ware, we can find out the source pop in North Russia...?