Tomenable
Elite member
- Messages
- 5,419
- Reaction score
- 1,337
- Points
- 113
- Location
- Poland
- Ethnic group
- Polish
- Y-DNA haplogroup
- R1b-L617
- mtDNA haplogroup
- W6a
Based on this study in the last 540 years (since ca. year 1450 AD) Poles share the most IBD segments with Germans, and apparently Romanians come 2nd. The latter might seem counter-intuitive but there was actually a large-scale Vlach migration to Poland:
http://www.cmap.polytechnique.fr/~anr-manege/CIRM2012/Talks_PPGE/Ralph.pdf
https://arxiv.org/pdf/1207.3815.pdf
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.1001555
Map for shared IBD segments from the last 0 to 540 years ago (the biggest circle represents Poles sharing with each other):
Unfortunately sample sizes are small, and they did not even sample Lithuanians (with whom we formed one Commonwealth):
Ashkenazi Jews share recent IBD segments (from the last 500 years) with Eastern Europeans:
https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1006644
Quote:
"We also considered IBD segments shared between AJ and other populations (Fig 5), and observed that the number of segments shared between AJ and Eastern Europeans was ≈6-fold higher than shared between AJ and Southern Europeans (consistent with [5]), with this ratio increasing to ≈60-fold for segments of more recent origin (length >7cM). Further, the number of segments shared with Eastern Europeans was ≈2-fold higher than with Western Europeans or the people of Iberia (P = 5∙10−3 for the difference, using permutations of the EU regional labels), pointing to Eastern Europe as the predominant source of recent gene flow. (...)"
But I wonder with which Eastern European populations do they share the most segments?
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Shared ancestors with Serbo-Croats in period 0 to 540 years ago, 555-1500 years ago & 1515-2535 years ago:
^^^ I would like to see a different breakdown into eras, in my opinion choosing such periods would be better:
- shared ancestors from years 0-450 AD
- shared ancestors from years 450-950 AD
- shared ancestors from years 950-1350 AD
- shared ancestors from years 1350-1750 AD
- shared ancestors from years 1750-present
http://www.cmap.polytechnique.fr/~anr-manege/CIRM2012/Talks_PPGE/Ralph.pdf
https://arxiv.org/pdf/1207.3815.pdf
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.1001555
Map for shared IBD segments from the last 0 to 540 years ago (the biggest circle represents Poles sharing with each other):
Unfortunately sample sizes are small, and they did not even sample Lithuanians (with whom we formed one Commonwealth):
Ashkenazi Jews share recent IBD segments (from the last 500 years) with Eastern Europeans:
https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1006644
Quote:
"We also considered IBD segments shared between AJ and other populations (Fig 5), and observed that the number of segments shared between AJ and Eastern Europeans was ≈6-fold higher than shared between AJ and Southern Europeans (consistent with [5]), with this ratio increasing to ≈60-fold for segments of more recent origin (length >7cM). Further, the number of segments shared with Eastern Europeans was ≈2-fold higher than with Western Europeans or the people of Iberia (P = 5∙10−3 for the difference, using permutations of the EU regional labels), pointing to Eastern Europe as the predominant source of recent gene flow. (...)"
But I wonder with which Eastern European populations do they share the most segments?
=====
Shared ancestors with Serbo-Croats in period 0 to 540 years ago, 555-1500 years ago & 1515-2535 years ago:
^^^ I would like to see a different breakdown into eras, in my opinion choosing such periods would be better:
- shared ancestors from years 0-450 AD
- shared ancestors from years 450-950 AD
- shared ancestors from years 950-1350 AD
- shared ancestors from years 1350-1750 AD
- shared ancestors from years 1750-present