Fig. 1
From: Visual adaptation of opsin genes to the aquatic environment in sea snakes
The amino acid replacements at spectra tuning positions of RH1 (left) and LWS (right) among the species analyzed in the study. Amino acids identical to the top line are indicated by dots. The amino acid replacements shown on or under the branches. Amino acid replacement in RH1 is shown as “RH1: S292A”. “H/N” indicates heterozygous at this position. A phylogenetic tree was modified based on previous studies [5]