Characteristics of Chlorovirus protein families. A: Distribution of protein families in the ancestral and non-ancestral subsets. B: Box-plot distributions of median compositional deviation index (CDI) in gene families. The number of gene families in a category is given in parentheses. Distribution means are shown by a red cross; medians are shown by horizontal lines in boxes. C: Distribution of genomic locations of non-ancestral gene families. For each family, we recorded the average genomic location for gene members that occur in colinear genomes.