Comparison of the number of sequences per CV class in the analysed species. Each bar represents the mean number of PM sequences per class and species (error bar represents the Standard Error of the Mean). Below the graph there is a summary of the two-way ANOVA results, using the number of sequences as a dependent variable and CV classes and species as factors. The differences in the number of sequences per class between species are analyzed by the interaction term (CV Class*Species). Significant differences (p < 0.05) between species are marked by *.