File:ADMIXTURE analysis of Horn of Africa populations.png

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English: Population structure of Horn of Africa (HOA: Ethiopia, Eritrea, Djibouti, and Somalia) populations. Closing up of ADMIXTURE analysis of 2,194 individuals from 81 populations for 16,420 SNPs (File:ADMIXTURE analysis of Horn of Africa populations in a broad context.png). Using a cross-validation procedure to estimate the best value for the parameter for the number of assigned ancestral populations (K) and found that values from 9 to 14 had the lowest and similar cross-validation errors. In the figure, individual ancestry estimation for HOA populations (with language groups indicated) and surface plots of the changing distributions of the Nilo-Saharan (light blue) and Arabian (brown) ancestry components for K = 10–12. At K = 11, a new HOA-specific ancestry component that we call Ethiopic appears (dark purple) and at K = 12 a second new ancestry component that we call Ethio-Somali (dark green) appears with its highest frequencies in the HOA.
Date Published: June 12, 2014
Source Hodgson JA, Mulligan CJ, Al-Meeri A, Raaum RL (2014) Early Back-to-Africa Migration into the Horn of Africa. PLoS Genet 10(6): e1004393. doi:10.1371/journal.pgen.1004393 http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1004393
Author Jason A. Hodgson, Connie J. Mulligan, Ali Al-Meeri, Ryan L. Raaum
Other versions
Horn of Africa in more broder context
Multidimensional scaling analysis
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