Scatter plot of individuals, showing the first two principal components of Arabian and other populations. Each symbol corresponds to one individual and the colour indicates the region of origin. We carried out the principal component (PC) analysis, which infers worldwide axes of human genetic variation from the allele frequencies of various populations, using the smartpca tool, available in the EIGENSOFT package, based on Genome-wide 215,286 SNPs.
Verónica Fernandes, Petr Triska, Joana B. Pereira, Farida Alshamali, Teresa Rito, Alison Machado, Zuzana Fajkošová, Bruno Cavadas, Viktor Černý, Pedro Soares, Martin B. Richards , Luísa Pereira
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Fernandes V, Triska P, Pereira JB, Alshamali F, Rito T, Machado A, et al. (2015) Genetic Stratigraphy of Key Demographic Events in Arabia. PLoS ONE 10(3): e0118625. doi:10.1371/journal.pone.0118625 <a rel="nofollow" class="external free" href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0118625">http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0118625</a>