Bygdedweller
Regular Member
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- 23
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- Ethnic group
- Norwegian
Preprint available here: biorxiv.org/content/10.1101/2020.03.20.000299v1.full (can't post hyperlinks due to my low post-count)
Abstract:
"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."
Not much new, but interesting nevertheless. Some key findings I drew from this:
Abstract:
"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."
Not much new, but interesting nevertheless. Some key findings I drew from this:
- High rates of inbreeding in the far north (Finnmark), Oslofjord-area least inbred
- Higher rates of Asian ancestry in Finnmark than expected, nearing 25% in the Saami-inhabited Kautokeino
- The divergent profile of the Southernmost counties (Rogaland, Agder, Telemark) is not due to foreign gene flow or Danish admixture, but rather increased homogeneity and geographical isolation (the sea being a barrier to gene flow) resulting in genetic drift