Is there genetic evidence of Scandinavian admixture in northern France?

[Neon Knight]

Well yes, but remember that the Normans settled in a relatively small area. The majority of Frenchmen with light features got it from Franks, Burgundians and other Germanic tribes. That's in general north and east.

I'm pretty sure a significant proportion of the Gauls would have had light features.

[Septentrion]

Since it has been established from my other thread that the Normans came from Scandinavia and settled in France, mixing with the native population before conquering other lands, is there evidence today of Scandinavian admixture in northern France that is not present in other parts of France?

I ask because in Sicily and the UK you can observe some degree of Scandinavian y-dna and minor autosomal admixture in some regions as opposed to others; is the same true of France?

If so, how do we know that northern France wasn't always more "Nordic"-like in character?

I'm curious to hear what others think about this.

Yes, of course. To this day, Scandinavians have their genetic legacy within the France genomic make-up which is broken up in the following bigeographic genetical regions:
59% (Western & Central Europe)
21% (Southern Europe)
7% (Great Britain & Ireland)
5% (Eastern Europe)
3% (Jewish Diaspora)
2% (Scandinavia)
2% (North Africa)