High-resolution K = 6 analysis of the European admixture in Chinchorro DNA

Below is a plot for a high-resolution K = 6 admixture analysis that includes a Chinchorro mummy sample from Chile dated to 3972–3806 BC.

Here are the admixture percentages for the Chinchorro sample:

      0.00%
      15.23%
      15.16%
      0.31%
      67.33%
      1.97%

Here the Chinchorro sample has large amounts of the blue and green components, and much smaller amounts of the yellow and purple components.

The pre-LGM European samples have a lot of the blue component, and some of them, particularly Kostenki 14 and the Gravettian sample Goyet Q53-1 from Belgium, have some of the green component, but their proportion of the green component isn’t as large as it is relative to the blue component in the Chinchorro sample.

The green component is absent in the post-LGM Western European hunter-gatherers, and also in the early European farmers, which excludes them as possible sources of the European admixture in the Chinchorro sample.

The sum of the non-Amerindian component percentages in this analysis is 32.67%, which remains very close to the sums for the preceding analyses.

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