Tag: R-V1636

Another “Pre-Yamnaya” sample from the Northern Caucasus?

wang-caucasus-maykop

I have updated the Ancient DNA Dataset, including a lot of new information from – among other sources – the latest version of Reich Lab curated Dataset, now renamed Allen Ancient DNA Resource (AADR). This includes new columns:

  1. Object-ID: I am now using whenever possible the Master-ID; Version-ID for a quick identification of the ‘best’ sample to include in SmartPCA or ADMIXTURE runs; and Index as a key with a unique reference number for each sample. That should make for enough stable references for any external tool to use the data.
  2. mtDNA: Added mtDNA coverage
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The Last of the Single Gravers

the-last-of-the-mohicans

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”

Recent Yamnaya-related intrusion in a Denmark Late Neolithic burial

denmark-single-grave-gjerrild

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

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