Supplementary Figure 8. Chromosome drop simulation

The results from simulations where the transmission of African fragments from a single ancestor’s genome was examined, conditional on the genealogical structure that connects HJ to his 182 genotyped descendants. The figure shows the null distributions for the expected proportion of genome covered by fragments transmitted to the 182 descendants under three different assumptions about the African ancestry of HJ: 25% (green), 50 % (yellow) and 100 % (blue). The observed proportion (0.38) of genome covered by African fragments found in the 182 HJ descendants is shown as a red line.