FIG. 1.
Model of sex-biased migration during the dispersal of modern humans from Africa. The figure outlines the primarily male migration model, a detailed description of which is provided in Materials and Methods. Nancestral is the ancestral Ne, NAfrican the African Ne, and Nnon-African the Ne of the ancestral population of North Europeans; t is the split time of the African and non-African populations; F is the severity of the out-of-Africa population bottleneck; g denotes the number of generations migration lasted following the bottleneck; m denotes its rate; and p the proportion of migrants who were male.