Fig. 5: ROH profiles and heterozygosity of the ancient coastal groups.
From: Genomic history of coastal societies from eastern South America
a, Sum of ROH fragments higher than 4 cM for each individual with more than 190,000 SNPs sorted by population name and in chronological order. The insert provides a legend of individual ROH profiles for recent loops (parents from 1st to 3rd cousins (C.)) and small population sizes. b, Heterozygosity distribution among the tested groups. This was calculated on the basis of the pseudo-diploid genotypes of three Sambaqui groups: south coast (n = 17), southeast coast (n = 5) and 2,200–1,200 yr bp individuals from the south coast (n = 4). In the box plots, the central line represents the median, the box edges represent the 25th and 75th percentiles, and the whiskers show the distribution of the remaining variation. The connectors mark the significant results obtained with the non-parametric Kruskal–Wallis test (P = 0.001), followed by the post hoc Conover’s test for multiple comparisons using the false discovery rate correction method (*P = 0.01914; ***P = 0.00089).
