Ancient DNA from Medieval Poland

 

Ancient DNA from Medieval Poland – West Eurasian PCA
 

Workflow:

merged fastq files -> bwa-aln -> mpileup -> pileupCaller -> smartpca

Samples (https://dx.doi.org/10.1093/gigascience/gix044):

Archaeological siteIDSample no.Sample no. that passed selectionDating
SowinkiSI21191000–1100 AD
NiemczaNA3631900–1000 AD
MarkowiceME881000–1200 AD
GnieznoGO221000–1200 AD
ŁęgowoLO981000–1200 AD 

 

Ancient DNA from Medieval Poland - Eurogenes K36 similarity map

Comments

ambron said…
Na wstępie mam pytanie: czy to jest blog Arzy, zapowiadany przez niego na Eurogenes?

Widzimy, że wczesnośredniowieczni Polacy wcale nie wyglądają genetycznie jakoś szczególnie wschodniosłowiańsko/bałtycko, jak nam to wróżyli Dawid z Michałem. Nie doszło też po wczesnym średniowieczu do jakiejś ich szczególnej westernizacji pod wpływem osadnictwa niemieckiego i holenderskiego, co zapowiadał Michał. Widzimy raczej sytuację odwrotną. W porównaniu z Polakami wczesnośredniowiecznymi, współcześni są ogólnie nieco bardziej przesunięci genetycznie w kierunku Słowian Wschodnich i Bałtów. Nie ma w tym jednak nic dziwnego, albowiem w późniejszych czasach doszło do asymilacji bałtyckich Prusów, Galindów i Jadźwingów i do utworzenia Unii Polsko-Litewskiej, a po drugiej wojnie światowej miały miejsce przesiedlenia kresów wschodnich.
ambron said…
Teraz warto byłoby włączyć do analizy inne wczesnośredniowieczne próbki z obszarów zachodniosłowiańskich - Krakauer Berg, Pohańsk, Sandomierz, Bodzia, Gniezno, Kraków.
Suevi said…
Did you analyse just one Medieval sample? Could you share K36 results?
Arza said…
@ Suevi
As stated in the blog post it's from the "merged fastq files". Individually their coverage is too poor, but you can sample SNP frequencies from the whole population.

MedievalPoland,
0.00,0.00,0.00,1.33,0.03,11.00,
0.01,0.00,4.01,0.00,19.70,0.00,
11.63,11.96,7.19,9.32,0.00,0.00,
1.54,0.00,0.00,7.13,0.11,6.27,
0.00,0.00,0.00,0.26,0.91,1.69,
0.83,0.00,1.88,0.00,3.21,0.00


Suevi said…
That's great, thank you! :) Have you been able to extract Y-DNA from these Medieval Polish samples?
Arza said…
@ Suevi
I only tested one sample. I'll run them all but it will take some time as there are 141 files in total.
ambron said…
Contrary to David's earlier announcements, Krakauer Berg did not turn out to be particularly similar to the Eastern Slavs:

https://eurogenes.blogspot.com/2020/11/slavic-like-medieval-germans.html

I wrote in this topic:

David:
"They will eventually, and they'll probably cluster with/near East Slavs like the three that are already there".

David, somehow I don't see it! Perhaps apart from one, none of these samples goes beyond the scope of Polish genetic variation. These samples are not particularly East Slavic. Unless on some general level, because the Western Slavs actually cluster near the Eastern Slavs.
Arza said…
@ ambron

I need to check this one more time, but Krakauer Berg seems to be a quite mixed population with a possible Baltic(-like) intrusion.

And if true these samples indicate where such people may have come from:

KRA009 - https://www.yfull.com/mtree/H13a1a1e/
VK533 - 42.2% "Finnish-like", Öland, Viking Age - H13a1a1e, N1a1a1a1a1a1a
Suevi said…
"I'll run them all but it will take some time as there are 141 files in total."

Any update on this?
Arza said…
For now I've tried to check Legowo. Not a single usable sample. They seem to be much worse than the IA screens.