Fig. 6.

Joint distributions of the expectations and standard deviations of the numbers of African and European ancestors across accepted parameter sets. For each accepted set of parameter values, the expected number of African ancestors and the expected number of European ancestors are computed from equation (10); the associated standard deviations are computed from equation (11). a) Expected number of European ancestors and expected number of African ancestors. b) Standard deviation of the number of African ancestors and expected number of African ancestors. c) Standard deviation of the number of European ancestors and expected number of European ancestors.