High-resolution K = 9 analysis of the European admixture in Chinchorro DNA

Below is a plot for a high-resolution K = 9 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%
      10.37%
      8.12%
      0.00%
      18.52%
      0.00%
      0.00%
      63.00%
      0.00%

Here the Chinchorro sample has significant amounts of the plain blue, light blue, and plain green components.

The pre-LGM Europeans also have significant amounts of the plain blue, light blue, and plain green components.

The pine green component is completely absent in the Chinchorro sample, and, with the exception of Kostenki 14, it is also completely absent in the pre-LGM Europeans.

The plain green component is absent in post-Magdalenian Europeans, and the pine green component is present in significant amounts in Europeans from the Copper Age on, which eliminates modern contamination as a possible source of the European admixture in the Chinchorro sample.

This analysis leaves pre-LGM, LGM, and Magdalenian-era Europeans as the only remaining possible sources of the European admixture in the Chinchorro sample, and the pre-LGM Europeans are a better visual match for that admixture than the Magdalenians.

The sum of the non-Amerindian component percentages in this analysis is 37%, which is a bit more than the 34.3% sum in the preceding analysis.

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