Figure 1: Whole-genome sequences of African-admixed populations in the Americas.
From: A continuum of admixture in the Western Hemisphere revealed by the African Diaspora genome
(a) Geographical location of 16 CAAPA sites and estimates of global ancestry across 642 samples from North, Central and South America and Africa. The transatlantic slave trade is illustrated for each colonial power, along with beginning and end years of the transatlantic slave trade for British/North American, British, French and Spanish Caribbean, and Portuguese/South America. The date of abolition of slavery noted for each country participating in the transatlantic slave trade. The bars depict the relative proportions of African (blue), European (red) and Native American (green) contribution at each CAAPA site. (b) Percentage of SNVs within MAF categories (1=singletons, 2=MAF<1%, 3=1%≤MAF≤5%, 4=MAF>5%) across all CAAPA sites illustrating discovery of novel variants (that is, those not previously annotated in dbSNP) across all ranges of MAF. (c) Site-frequency spectrum of known and novel SNVs within CAAPA. (d) De-convolution of novel alleles by ancestral background in CAAPA using a paired t-test illustrates an excess of novel alleles occurs on the African/African background in contrast to the European/European and Native American/Native American background.
