The BAM files from Egfjord et al. (2021) are out, and Y-SNPs of two-year-old Nordic MN_LN/LN migrant Gjerrild 5 (ca. 2284-2035 calBC) were accurately reported, which means that the sample will need to be labelled R1b>L754>L389>(pre-?)V1636, since one derived read Y125110+ (A->G) in this and one ancestral in a Progress2 sample, PG2001, cannot be used to infer anything certain.
NOTE. It has one derived read (A-T) for FT3897 at the R1b>L754>L389>V1636>Y83069 level, but the other 8 SNPs ancestral, which is not really helpful to define a potential pre-Y83069 branch, given the doubts above. A possible relative could … Read the rest “The Last of the Single Gravers”
Open access Genomic Steppe ancestry in skeletons from the Neolithic Single Grave Culture in Denmark, by Egfjord et al. PLoS One (2021).
Relevant excerpts (emphasis mine, content under CC-BY):
Gjerrild stone cist
The Gjerrild stone cist in northern Djursland, eastern Jutland, is remarkable for containing the largest and best-preserved assemblage of SGC skeletons known from Denmark. From this follows a unique opportunity to obtain information on the genetic ancestry of people representing the SGC in Denmark. In the cultural history of Neolithic Denmark, northern Djursland is peculiar as this area lacks finds from the final TRB period but
… Read the rest “Recent Yamnaya-related intrusion in a Denmark Late Neolithic burial”
Open access paper Mobility and Social Change: Understanding the European Neolithic Period after the Archaeogenetic Revolution, by Martin Furholt, J. Archaeol. Res. (2021).
Content under CC-BY license. Interesting excerpts (emphasis mine, stylistic changes for clarity):
This detailed picture of Caucasian population history shows that the initial assertion in the 2015 papers, namely of a one-way migration from east to west, was a simplification supported by a variant of admixture analyses that featured Yamnaya as one unified genetic element (e.g., Haak et al. 2015, fig. 3), which led to calculations of Corded Ware individuals showing 75% Yamnaya ancestry. This
… Read the rest “The complexities of 3rd millennium Steppe-related migrations”
Within months, it will be finally confirmed that both Late Repin offshoots – Early Yamnaya and Afanasievo – spread with clans that were dominated by R1b-L23 patrilineages. Succeeding migration events, likely coupled with internal founder effects under the most successful clans, left Indo-Tocharian-speaking clans as an almost uniform community in terms of Y-chromosome haplogroups, with their most recent common ancestor traceable to the 5th millennium BC.
Before that, it seems that the Indo-Anatolian-speaking Early Khvalynsk community was slightly more diverse. In particular, the success of R1b-V1636 lineages is apparent in the Khvalynsk-Novodanilovka expansion, since it is … Read the rest “Proto-Indo-European kinship system and patrilineality”
Prehistoric populations did not set stable regional boundaries, but rather dynamic local ones in constant flow and change of interaction strategies. Semi-nomadic groups like the Yamnaya and early mobile Corded Ware communities had an even more variable control of pasture lands – at least until they settled down and became “locals” in certain territories. Nevertheless, the Carpathians – like the Caucasus Mountains – might be a priori regarded as a more stable natural border, that could help populations of the same language keep strong cultural and kinship ties.
The upcoming samples from the Carpathian Basin, announced in Szécsényi-Nagy’s oral communication, … Read the rest “East Slovakia Yamnaya settlers and links with Niche-Graves”
Informal report by Bulgarian archaeologist Svetoslav Stamov in 7/8 TV, from data collected by the Reich Lab for their future paper on South-Eastern Europe.
As can be seen from the TV captions below, this is the earliest R1b-P310 from Yamnaya or Yamnaya-related individuals in Early Bronze Age contexts from Bulgaria. In fact, its appearance together with a R1b-Z2103 lineage (and another undefined R1b-M269) shows once again that the earliest R1b-L23 bottlenecks were associated with Proto-Indo-Europeans.
Lacking a precise periodization, location, or proper cultural context in the spreadsheet, it is impossible to know whether they belong to Khvalynsk-related cultures … Read the rest “West Yamnaya settlers like Early Bell Beakers: R1b-P310 and R1b-Z2103”
Another preprint came out at the same time as Wang et al. (2020), from the Jena Lab of the Max Planck Society: A dynamic 6,000-year genetic history of Eurasia’s Eastern Steppe, by Jeong, Warinner, et al. bioRxiv (2020).
NOTE. I have now updated the Ancient DNA Dataset, the Prehistory Atlas – with PDF and GIS files including Y-DNA and mtDNA of all newly reported samples (starting with the Neolithic) – as well as the PCA files with those from Wang et al. (2020).
The conclusions are similar, but with some interesting twists. Relevant excerpts (emphasis mine), … Read the rest “R1b-rich Proto-Indo-Europeans show genetic continuity in Asia”