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. 2016 Aug 4;11(8):e0160270. doi: 10.1371/journal.pone.0160270

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© 2016 Charlon et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 2 — (a) The 2,000 most contributing SNPs to each of the first 8 principal components are displayed by chromosomal position and colored by chromosomes. Principal components were driven by large localized SNP groups and the chromosome 6 locus HLA was the strongest and largest contributor in all of the first 8 principal components, except principal component 5. (b) Selection of SNPs by the Gaussian mixtures based method. Selected SNPs are colored in red. SNPs are displayed on the x-axis by rank of chromosomic position, i.e. SNPs are regularly spaced and ordered by chromosome and position.