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They received the Greek ancestry indirectly from Italians in the Imperial Roman era. There was a significant Greek migration from the Aegean islands and West Anatolia into Italy during the Early Roman Imperial period.
The G25 admixture models below do not imply direct ancestry but they show at which ancient people modern Jews are genetically shifted to. Most of the mixing seems to have happened when Jews lived in Italy.
Blog moved here: https://genesoftheancients.wordpress.com/
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Updated 7/12/2023
In this post, I will examine the genetic makeup of modern populations in comparison to the ancient Greeks, analyzing how their DNA differs and identifying any similarities that may exist.
We estimated FST of Bronze Age populations with present-day West Eurasians, finding that Mycenaeans are least differentiated from populations from Greece, Cyprus, Albania, and Italy (Fig. 2), part of a general pattern in which Bronze Age populations broadly resemble present-day inhabitants from the same region (Extended Data Fig. 7).
The Global25 admixture charts you see below illustrate the percentage mixtures needed to get the closest match to a modern target when comparing their DNA to ancient DNA samples. In simpler terms, they show how much mixing of different ancient DNA samples is required to match the genetic profile of present-day populations. This doesn't necessarily imply a direct descent from the exact population depicted; it could instead be from a population closely related or similar to the one shown.
