[JeanLM]

The Orkney people were unique in one other way. In the rest os Britain the population was replaced with male DNA from the continent and mated with original female DNA from the native Britons. In Orkney it was the other way around.

[AdmSmith]

Map showing the proportions of Scandinavian and British/Irish ancestry for mtDNA (Mt) and Y-chromosomes (Y) for each of the admixed populations from the North Atlantic region included in this study. The Scottish island groups of Shetland, Orkney, the Western Isles and Skye, and the region that we define as the ‘North and West coast of Scotland’, are encircled for clarity.

Major events in the population history of the British Isles. Source: https://www.nature.com/articles/nature14230

https://stetson.substack.com/p/the-genetic-history-of-the-british

https://www.researchgate.net/figure/Map-showing-the-proportions-of-Scandinavian-and-British-Irish-ancestry-for-mtDNA-Mt-and_fig1_7920315

The search continues.