Genetic affinities of Ata specimen to the reference populations. (A) Scatterplot showing the three-dimensional PCA of five super populations of the 1000 Genomes Project (phase 3) and the Ata genome (black dot). Ata genome lies in the range of admixed populations and it is closest to Mexican ancestry from Los Angeles (MXL). (B) Three-dimensional PCA of eight major families from 52 Native American populations (493 individuals) and the Ata genome. The Ata genome is closest to the three individuals of Andean ancestry (in green), specifically belonging to the Chilote population, which supports a Chilean origin of the individual. (C) ADMIXTURE analysis with the Native American population data set. Global ancestry components of major Native American population group (P1–P8) and Ata (S) as identified by ADMIXTURE program at K=12. The magnified view of admixture mapping of Andean (P4), Ata (S), and Eskimo-Aleut (P5) samples suggests that Ata is an admixed individual with traces of European (in pink) and Native American ancestry with Andean lineage (in green and beige).
