The horizontal axis shows the recombination rate <i>r</i> and the vertical axis the probability that the global peak genotype reaches fixation (and likewise for Figs 5–12).

<p>The graph shows the effect of recombination for a 4-locus system with 2 suboptimal peaks. The genotype 1111 is the global peak, and the genotypes 1100 and 0011 are suboptimal peaks. Initially, the population is equally distributed on the two suboptimal peaks. The simulation is intended to capture a critical part of an evolutionary scenario for subdivided populations with migration. Specifically, two genetically different subpopulations mix. See the <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0193123#sec005" target="_blank">Methods</a> section for more details on the simulations.