Fig. 4

Heterogeneous rates of gene order divergence within subphylum. a. Rates of genome rearrangement positively correlate with species richness at the level of class in Ascomycota. The rates of genome rearrangement were calculated as dGOD per unit of protein sequence distance. b. A scatter plot of the species number and median value of dGOD per unit of protein sequence distance in the five Ascomycota classes. A positive correlation can be observed between the two variables (Pearson correlation coefficient r = 0.89)