Who are the Scots, really? Not Celts. Not one tribe. Ancient DNA from Skara Brae, Pictish graves and Viking burials reveals five layers of ancestry — and a population replacement nobody remembers.

In this video: the first farmers of Orkney, the Beaker replacement that changed Britain, the myth of the Celts, what DNA says about the Picts, the Gaels, Britons and Anglo-Saxons, the Norse in Orkney and Shetland, six genetic clusters inside Scotland, red hair, clan surnames and how tartan became "ancient".

Sources: Olalde et al. 2018 (Nature); Patterson et al. 2022 (Nature); Leslie et al. 2015 (Nature); Gilbert et al. 2019 (PNAS); Goodacre et al. 2005; Margaryan et al. 2020 (Nature).

This channel explains population history using published science. Ancestry results describe populations, not individuals, and DNA does not decide who belongs to any nation.

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