Are French people Celtic, Germanic or Latin in DNA?

https://i.imgur.com/sh8SQ2m.png
G25/nMonte does not recover true ancestral composition. It only finds the best geometric fit of a target in PCA space using the source populations you give it. So if you model French people with ‘Celtic’, ‘Germanic’ and ‘Latin’ proxies, the result is just the best approximation within that reference set, not a biologically real breakdown of French DNA.

Quote:

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Originally Posted by cass

An interesting topic, so I created a model generally based on the 400–200 BC period, with the exception of Eastern European ones. I skipped the English sample because I’m not sure how to assign it.



https://i.ibb.co/8LzTgPkL/Zrzut-ekra...-github-io.jpg
https://i.ibb.co/Tx0JyZpf/Zrzut-ekra...-github-io.jpg
https://i.ibb.co/BHGr97hC/Zrzut-ekra...-github-io.jpg

It may be interpreted differently depending on the distance.

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This model does not work because nMonte is fitting French targets to the available ancient sources as a geometric best fit in PCA space, not recovering their true biological ancestry. A low distance only means the coordinates were approximated well with that source set; it does not validate the historical meaning of the components or make the solution uniquely true.”

“It is said that in his wars in Gaul he slew a million men and enslaved another million.”
— Plutarch, Parallel Lives (Life of Caesar)


Since the invasion of Gaul by Julius Caesar, France has undergone continuous and significant population changes driven by warfare, migrations, and long-term demographic shifts.