Fig. 2From: Visual adaptation in Lake Victoria cichlid fishes: depth-related variation of color and scotopic opsins in species from sand/mud bottomsDiversities of opsin genes in Lake Victoria. a Genetic diversities of opsin genes. Each column indicates mean distance for synonymous (gray) or nonsynonymous (black) substitutions for ten species in Lake Victoria. Amino acid alignments of b LWS and c RH1 alleles. Residue positions are numbered according to the sequences of each opsin gene. The amino acid positions 62, 131, 137, 168, 177, 179, 216, 222, 226, 227, 230, 275, and 282 in LWS correspond to 49, 118, 124, 155, 164, 166, 203, 209, 213, 214, 217, 262, and 269 in bovine RH1. The amino acid positions in cichlid RH1Â are identical in bovine RH1. The dots and letters indicate identical and different residues, respectively, compared with the top lineBack to article page