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Thread: The Genetic Structure of Norway

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    Default The Genetic Structure of Norway

    Not a lot in this study but I haven't seen any others of Norway. No ydna, mtdna but basically Norway is fairly isolated so naturally some drift in the population most markedly in some counties such as Rogaland and Vest-Agder. Interesting that there has been a low degree of shared ancestry between Norway and Denmark with elevated sharing on the borders of Norway and Sweden.

    The aim of the present study was to describe the genetic structure of the Norwegian population using genotypes from 6369 unrelated individuals with detailed information about places of residence. Using standard single marker- and haplotype-based approaches, we report evidence of two regions with distinctive patterns of genetic variation, one in the far northeast, and another in the south of Norway, as indicated by fixation indices, haplotype sharing, homozygosity and effective population size. We detect and quantify a component of Uralic Sami ancestry that is enriched in the North. On a finer scale, we find that rates of migration have been affected by topography like mountain ridges. In the broader Scandinavian context, we detect elevated relatedness between the mid- and northern border areas towards Sweden. The main finding of this study is that despite Norway’s long maritime history and as a former Danish territory, the region closest to mainland Europe in the south appears to have been the most isolated region in Norway, highlighting the open sea as a barrier to gene flow.
    https://www.biorxiv.org/content/10.1...299v1.full.pdf

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