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. 2019 Sep 25;9:13900. doi: 10.1038/s41598-019-50362-2

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(a) The figure depicts a scatterplot showing the two first principal components for the BRS sample (black), Europeans (blue), sub-Saharan Africans (red), and admixed Americans (orange) from 1 KGP. (b) Global ancestry inference for ADMIXTURE K = 5 and K = 10, including the BRS and Europeans, sub-Saharan Africans and admixed Americans, where K = 10 had the lowest CV error estimate. Grades of blue, grades of red, and green indicate European, sub-Saharan African, and native American ancestry components, respectively.