English, Irish, Scots: They’re All One, Genes Suggest – New York Times

March 6, 2007

English, Irish, Scots: They’re All One, Genes Suggest – New York Times

I have no opinion on any of this, but I was confused by something:

…Dr. Thomas and colleagues say the invaders wiped out substantial numbers of the indigenous population, replacing 50 percent to 100 percent of those in central England.

Their argument is that the Y chromosomes of English men seem identical to those of people in Norway and the Friesland area of the Netherlands, two regions from which the invaders may have originated.

Dr. Oppenheimer disputes this, saying the similarity between the English and northern European Y chromosomes arises because both regions were repopulated by people from the Iberian refuges after the glaciers retreated.

If the residents of both Northern Europe and the British Isles were mainly descendants of the Iberian refugees at the time of the invasions, how could DNA evidence be at all meaningful?

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