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Monday, June 19, 2017

Polish aDNA PCA

Below is a Principal Component Analysis (PCA) that I put together for an upcoming presentation on Polish ancient DNA (aDNA). The five RISE samples are from Allentoft et al. 2015, including RISE569, the early Slavic genome from the Czech Republic, which was initially wrongly labeled as a Czech Bell Beaker (see here). PL_N17 is an Early Bronze Age (EBA) sample from Gustorzyn, Northern Poland (see here).

I also organized f3 outgroup statistics of the form f3(European_pop,Test,Yoruba) for each of these samples to compare their genetic affinities to present-day European populations. Although f3 outgroup statistics aren't as sensitive as haplotype tests, I think these results look interesting and useful, with both PL_N17 and RISE569 seemingly showing strong links to modern-day West Slavs. The full output is available in a zip file here.

Poland_EBA PL_N17
Lithuanian 0.175778
Ukrainian_West 0.174866
Sorb 0.174334
Estonian 0.174313
Icelandic 0.17397
Irish 0.173863
Polish_West 0.173743
Polish_East 0.173549
Czech 0.173545
Norwegian 0.173533

Early Slav RISE569
Sorb 0.169171
Lithuanian 0.168945
Estonian 0.168819
Polish_West 0.168267
Polish_East 0.168143
Irish 0.168092
Czech 0.167941
Norwegian 0.167787
Icelandic 0.167696
Finnish 0.167685

See also...

Testing for genetic continuity in Poland from the Bronze Age to the present


Twasztar said...

Why do we have so little crucial ancient DNA from Poland? Where does that strange reluctance to research Polish territory further come from?

Lukasz M said...

Davidski, if I read it well? RISE569 is near modern German sample (blue triangle). It means this particular German is Slavic shifted, or RISE569 is "Slavo-German", or both is true?

Davidski said...

Those Germans on the eastern edge of the German cluster have Slavic ancestry. But RISE569 is probably also mixed.

Samuel Andrews said...

Btw, the mtDNA H28, H1b1, and H1b2 find in Globular Amphora directly link them to modern Eastern Europeans. It's definitely a EEF/WHG ancestor.

Antoni Małkowski said...

Można Pana prosić o włączenie do wykresu I2787 BB_Central_Europe Węgry R1b1a1a2a2

Davidski said...

Nie mam jeszcze dostepu do probek z Olalde et al. 2017.

mickeydodds1 said...

David, what exactly is the genetic relation between these ancient Polish samples and the modern Irish?
Are Irish origins ultimately in central Europe?

Davidski said...

Eastern and Central Europe.

And the relationship between these Polish samples and modern Irish is very close.

Arza said...
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