This will be my last IBD test for a while, because IBD itself is not a good method for seeking oldest ancestral linkages. It is still a good statistic method manifesting events of the Iron Age and the genealogical time frame. It is excellent in seeking real ancestral linkages in the before mentioned time-period and can be preferred instead of any method using allele data, such as PCA, DSTAT etc., because all those methods imply only genetic distance and genetic distance depends on the admixture itself. Using allele statistic in seeking the origin of mixed populations is always misleading. You can only suggest that your hypotheses are right or wrong and continue testing using different variations to increase the probability.
Here I present some IBD results of both Finnic and Russian populations using Beagle version 5. The linkage between all Finnic people and also between Finnic and Baltic people is notable and turns up in Pskov (in Finnish Pihkova). The Pskov area is also the northernmost place in Russia where I have found autosomal relatives (23andme).
I use again Finnish samples from the 1000 genomes project, but at this time I grouped them using my project members, whose geographic origin is known.
Cross-checking with Pskov is presented below. Notice that there is no Siperian admixture in Pskov. Although people, including most researches, suggest that the Siberian admixture among Finnic people is a common signature of the origin of the FU languages, nothing about it is proven. The Siberian admixture in Finland is dated to the Iron Age by several scientists and research. Still the hypothesis of the present day Siberian admixture in Finland and the origin of the language (FU urheimat theories) is usually thought to be proven! The IBD connection between Finns and North Russian is two-fold; at first the Finnish Iron Age migration to Russia and secondly the common Siberian admixture which is quite new. This kind of Iron Age Siberian migration/admixture doesn't exist between Finns and people in Pskov and we have no evidence about migrations from Finland to Pskov. Instead of this, we have clear and undeniable linguistic evidences about Finnish eastern migrations to the Northwestern Russia, at least to the area of the lake Onega! The primary conclusion have to be that the Pskov area had a pre-Iron Age connection with Finnic people, including the Finns. It must have happened before the Siberian admixture in Finland and before the Finnish eastern migration.
Russian results do not give an observation of any distinct ancestry from the Pskov area and only the northernmost Russians show some divergence from the Russian resemblance.
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