Figure 6

Evolution of phenotypic diversity under evolving assortative mating. For an explanation of terms and measures see Methods. A Evolution of niche-fitness (equation 2) in the full and null model. B Evolution of the difference in niche-fitness between hybrids and non-hybrids in the full and the null model. C Evolution of species heterogeneity in the full and the null model. D Evolution of species cohesion in the full and the null model. E and F Clustering of phenotypes present in the population at time 500000 in the full (E) and null model (F). A random 10% sample of individuals are taken from the population. Individuals (rows) are clustered based on phenotype similarity, phenotype genes (columns) are clustered based on across population expression pattern similarity. G and H Niches to which individuals are best adapted at time 500000 in the full (G) and null (H) model, for the same individuals as in E and F. Row and column clusterings are the same as in E and F. I and J Snapshots of the distribution of individuals on a 25% part of the grid world at time 500000 in the full (I) and null (J) model.