Study: Ancient Icelanders mix of Celtic and Norse ancestry

[Aren]

btw, which study say Norway is 20% Polish like ? I know for Denmark, and actually Polabian Slavs did settle there, but Norway ? Please post a link.

ADMIXTURE runs are not actual ancestry. Think of them as the mixed oracle on Gedmatch. You probably get 50% Polish + 50% Albanian but you are neither obviously it's just a marginally better fit for you than 100% Croatian.

[Jana]

ADMIXTURE runs are not actual ancestry. Think of them as the mixed oracle on Gedmatch. You probably get 50% Polish + 50% Albanian but you are neither obviously it's just a marginally better fit for you than 100% Croatian.

I just said Slavs settled in Denmark as fact, while there is no real Slavic admixture in Norway.

[Jana]

See Supplementary Figure 6.:

https://www.nature.com/articles/s41598-017-17124-4

https://static-content.springer.com/...MOESM1_ESM.pdf

Thanks! It must be ancient shared ancestry in that case.

[Aren]

I just said Slavs settled in Denmark as fact, while there is no real Slavic admixture in Norway.

And I'm telling you they predicted Polish input in Norwegians in the chart Peterski posted by using ADMIXTURE, in other words it's not actual ancestry.

[Jana]

And I'm telling you they predicted Polish input in Norwegians in the chart Peterski posted by using ADMIXTURE, in other words it's not actual ancestry.

Yeap.

[Peterski]

And I'm telling you they predicted Polish input in Norwegians in the chart Peterski posted by using ADMIXTURE, in other words it's not actual ancestry.

They also used ADMIXTURE for modelling British and Irish populations. Exact same methodology.

So it's also not necessarily actual ancestry.

They should try to model ancient Irish sample with ADMIXTURE, Bronze Age Irish samples, etc. It will be fun if Bronze Age Irish samples get - for example - 30% Norse, more than modern Irish samples.

[Peterski]

Thanks! It must be ancient shared ancestry in that case.

It is always hard to determine how old a particular "admixture" is.

For example DNA Tribes models me as 1/3 Danish-like, but you would be very mistaken to assume that it is anything recent, or even from the Viking Age. It is much older than that:

https://www.theapricity.com/forum/sh...=1#post4463596



I was surprised by that model until prof. Figlerowicz - the guy from Poznań University who is researching Wielbark culture and Przeworsk culture Iron Age DNA from Greater Poland (Wielkopolska) - came out and explained it. From page 130 of the book (excerpt from an interview with prof. Figlerowicz):

https://histmag.org/Roman-Zuchowicz-...recenzja-16753

Quote:

Legendary Great Lechia was in reality rather Great Denmark, because the population of Polish lands in the Iron Age originated from the Jutland Peninsula - except for Masłomęcz. People from Masłomęcz were different than those from Kowalewko. And in Masłomęcz there was no autosomal difference between women and men, unlike in Kowalewko. We can see different influences there. In Kowalewko, the population had constant contacts with Northern Europe and there was continuous migration flow. In Masłomęcz, they came just once, stayed, and mixed with the locals.

So there is a Danish-like Pre-Slavic substrate to the west of the Vistula River.

On the other hand, North-Eastern Poland has a Lithuanian-like substrate.

[Grace O'Malley]

It is always hard to determine how old a particular "admixture" is.

For example DNA Tribes models me as 1/3 Danish-like:



I was surprised by that model until prof. Figlerowicz - the guy from Poznań University who is researching Wielbark culture and Przeworsk culture Iron Age DNA samples from Greater Poland (Wielkopolska) - came out and said:

From page 130 of the book (excerpt from an interview with prof. Figlerowicz):

https://histmag.org/Roman-Zuchowicz-...recenzja-16753

Legendary Great Lechia was in reality rather Great Denmark, because the population of Polish lands in the Iron Age originated from the Jutland Peninsula - except for Masłomęcz. People from Masłomęcz were different than those from Kowalewko. And in Masłomęcz there was no autosomal difference between women and men, unlike in Kowalewko. We can see different influences there. In Kowalewko, the population had constant contacts with Northern Europe and there was continuous migration flow. In Masłomęcz, East Germanic tribes came just once, stayed, and mixed with the locals.

DNA Tribes gave me mostly Danish which obviously isn't correct.

[Petalpusher]

I ve never seen a pca with Iceland between Norway and Ireland. They are usually even closer to SHG than other Scandinavians. Ydna proportions never tell much but in Icelandic for obvious reasons it means really peanuts

[Peterski]

DNA Tribes gave me mostly Danish which obviously isn't correct.

They gave you Pima Mexico? ^^