Figure 2.

The frequency of hybrid speciation (proportion of 500 simulated hybrid swarms evolving reproductive isolation; y‐axis) as a function of the strength of selection acting on epistatic loci (s _epistatic; colored points and lines) and selection acting on additional “adaptive” loci subject to selection (s _adaptive; x‐axis; a: directional selection model; b: diversifying selection [i.e., parental genotypes equally favored]; c: selection‐for‐admixture). Results are shown for hybrid populations simulated with an interlocus recombination rate of 0.2, migration rates of 0.0001 and 0.001 (panel columns), and with different linear arrangements of loci along the chromosome (i.e., genetic architectures; panel rows)