Population genetics vs. geographical location

[reboun]

Which populations are genetically northern/southern/eastern/western shifted with respect to their geographical locations? For example, Iranians might be northern shifted for their location since thanks to their Steppe ancestry. North Italians might be southern shifted for their location thanks to Neolithic Farmer ancestry. Are there anymore examples that comes to your mind?

[Komintasavalta]

I tried doing an ADMIXTURE run with a k value of 2 for modern Eurasian samples in the 1240K+HO dataset. I excluded samples which didn't have a longitude coordinate.

Finns and northwestern Turks from Balikesir are west of the regression line, but Karelians and other Turks are east of the regression line.

One of the westernmost almost fully Mongoloid populations are Dungan, who are Chinese-speaking Muslims that migrated to the area of Kyrgyzstan and Kazakhstan in the 1800s.

The westernmost population that has about 50% or more of the Mongoloid component are Nogais from Stavropol, which is north of North Caucasus. Stavropol is west of the westernmost point of Nenetsia, even though a few Nenetses live even further west in Murmansk Oblast.

https://i.ibb.co/m8pWb02/admix-vs-longitude.png

Code: https://anthrogenica.com/showthread.php?24356-Dimensionality-reduction-using-Ancol-PCA&p=788035&viewfull=1#post788035.

[Komintasavalta]

North Germanics and Ashkenazis are woggy relative to the latitude they live at. But VURians, Slavs, Nogais, and Kalmyks have low wogginess relative to latitude:

https://i.ibb.co/7b4tJwz/a.png

The correlation coefficient between wogginess and yearly average temperature might be higher than the correlation coefficient between wogginess and latitude. Based on yearly average temperature data listed by Wikipedia, even the capitals of Bashkortostan and Tatarstan are colder than Reykjavik.

[Ayetooey]

All Balkan slavs are northern for their location; North English are quite southern for it. Some North Italian regions are very southern genetically for their geographic position, more so than people residing 37N in Andalusia.

[Ayetooey]

Other obvious examples are Ashkenazi (very south for their locations in central-east europe, north for their location in Israel) and Roma.

[Jana]

Dalmatian and Herzegovian Croats are genetically very northern shifted for their location which is deep south in climate and latitude, because they preserved pred. early Slavic ancestry.

[Komintasavalta]

Here's another plot for ancient samples with at least 500,000 SNPs and age BP 500 or higher.

Afanasievo and Andronovo are expectedly far east of the regression line.

Karelia_HG is at such an eastern longitude that it's almost on the regression line even though it has about 22% of the Mongoloid component. Sunghir and Kostenki are located at around longitude 40, so they're only slightly west of the regression line even though they have about 28% of the Mongoloid component.

Norway_Mesolithic (Hum1 and Hum2) is west of the regression line even though it has 9% of the Mongoloid component, because it's located at the southernmost point of Norway.

The westernmost populations with 100% of the Mongoloid component are Kazakhstan_GoldenHordeAsian and Kazakhstan_Nomad_HP.

https://i.ibb.co/rH79STJ/longitude-admixture-ancient.png

[Jana]

Southern shifted for their latitude and climate -Romanians and Moldovans. Also Swiss.

[J. Ketch]

Every nationality in Europe is basically where they should be relative to others, apart from Italians due to East Med admixture in the Roman Empire, and many South Slavs/Balkanites.

[reboun]

Southern shifted for their latitude and climate -Romanians and Moldovans. Also Swiss.

Are Swiss really southern shifted for their location? I always thought the other way around since they are ethno-culturally related to their north more (Germany, Belgium, etc.)

[RogueState]

It's true that one of the thing that shocked me the most when I started reading about population genetics, is how Croatians are genetically "Northern" compared to their geography

[reboun]

Other obvious examples are Ashkenazi (very south for their locations in central-east europe, north for their location in Israel) and Roma.

Yes. Diasporas are usually autosomal outliers of their geographical location. For example, Turks from Germany are mostly southeastern shifted by DNA.

[Ayetooey]

Yes. Diasporas are usually autosomal outliers of their geographical location. For example, Turks from Germany are mostly southeastern shifted by DNA.

I don't think they are outliers, they just probably migrate to Germany from one specific region of Turkey. It's often the case that diaspora in western Europe migrate from one or two regions. Majority of Turks in Britain are from Cyprus for example.

[reboun]

I don't think they are outliers, they just probably migrate to Germany from one specific region of Turkey. It's often the case that diaspora in western Europe migrate from one or two regions. Majority of Turks in Britain are from Cyprus for example.

Actually, I meant they are outlier with respect to the most of the Germans.