Fig. 2.

Phylogenetic trees of green and blue pigment genes. Numbers at branches indicate the bootstrap probabilities (≥90%) with 1,000 replicates. (A) Trees of green pigment genes. Tuna RH2 genes are shown in green. Note that the previously named RH2-A/B genes of medaka do not correspond to cichlid RH2A/B, and the tuna RH2A/B correspond to the cichlid genes. The trees were constructed by using full sequences (Left) and C-terminal sequences (Right), respectively. (B) Trees of blue pigment genes: full sequences (Left) and C-terminal sequences (Right). Tuna SWS2 genes are shown in blue.