Figure 1.

Phylogenetic trees for cyclins A (A) and D (B). Branching significance estimated in calculation of phylogenetic tree was supported by numerical values (the Shimodaira and Hasegava test and the aLRT χ² test). Bifurcations resolved manually on the basis of literary data are indicated by asterisks (*). Inner branches for which atypical replacements were observed are highlighted in red.