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Latinos with European haplogroups tend to be autosomally more European as well.
This is similar to what could be observed in Europe after Indo-European invasions.
Shortly after Steppe invasions, there was correlation between Y-DNA and autosomal DNA. From page 66 of Olalde et al. 2017 ("... The Genomic Transformation Of Northwest Europe"):
On GEDmatch Latinos with Native haplogroups tend to have more of Native autosomal DNA. Especially if they have both Amerindian Y-DNA and mtDNA, rather than just Amerindian mtDNA.Overall, Y-chromosome haplogroups [of Bell Beaker culture men] are highly correlated with steppe ancestry proportions in the nuclear genome (...).
Six individuals outside Iberia without R1b Y-chromosomes were excavated in Hungary (n=4), Germany (n=1) and England (n=1). Interestingly, most of these individuals presented low amounts of steppe ancestry in the nuclear genome as compared to R1b individuals from the same regions (Figure S1).
And this is not so surprising, since we are only 500 years after Columbus.
After the Indo-European invasion of Europe, higher classes were surely more Steppe-descended while lower classes were more Neolithic-descended. Especially in Southern Europe where Indo-Europeans did not replace the entire population, but mostly imposed themselves as new ruling elites.
When more of ancient DNA full genome samples from Bronze Age and Iron Age Greece, Italy and Iberia get published, I am sure that we will see higher levels of Steppe ancestry in DNA of high status individuals - such as Mycenaean aristocracy or Roman patricians. While lower status individuals will be more similar to present-day Southern Europeans, with their low levels of Steppe ancestry.
All Mediterranean supremacists will get triggered by these ancient DNA results.
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