Fig. 3
IICR s for asymmetrical gene flow and continent-island models. In the first three panels the two genes were sampled in the same deme, whereas in panel d they were sampled in two different demes. Panels a, b show a model with two or three islands, respectively, that exchange genes at different rates (M 12 = 1, M 21 = 0.1, M 23 = 1, M 32 = 0.1, M 21 = 0.1, M 31 = 0.01 and M 13 = 1, where M ij is the number of haploid genomes in deme i that migrated in from deme j. Panel c shows the result for the continent-island model with a size ratio 1:10 (the continent is ten times larger than the island) and M = 1. For comparison we also plotted the simulation and theoretical results for a comparable n-island model in all panels, as in the other figures. For panels a, b we added the theoretical IICR for M = 0.1 and M = 0.01 since these are the rates of exchange between some of the demes
