MDS plots of Nei’s minimum genetic distances.

<p>A. All 63 populations, color-coded by geographic region. B. 29 Native American populations only, color-coded by language family and sized by the level of non-Native American ancestry. The Tupi-Guaraní-speaking Ache and Suruí populations fall well outside of the plot margins. Their PCo scores are shown in the upper right and left portions of the plot.