Figure 3.

Effects of a deleterious allele “a” with fitness reduced by 30%. The phenotypic landscape is extrapolated from five additive genes (n_L = 5). There is no interspecific competition (α₀₁ = α₁₀ = 0) and carrying capacity may either be equal or unequal between the interacting taxa (K₁ = K₀ or K₁ = 1.5 K₀). (a) Allele “a” is recessive (ε_a = 0); (b) allele “a” is co-dominant (ε_a = 0.5); (c) allele “a” is dominant (ε_a = 1). Simulations incorporating interspecific competition (α₀₁ = α₁₀ ≠ 0) are available in Supplementary Fig. S3. We explored various levels of interbreeding success rate, from rare hybridization success (γ = 0.01) to a panmictic mating system (γ = 1). The data corresponds to the situation after 100 generations of independent evolution and 150 generations of genomic mixing (250 total generations).