Neighbor Joining phylogeny of teleost SWS2 opsin genes. NJ tree was reconstructed from SWS2 sequences of 20 teleost species and Xenopus tropicalis as the outgroup, using the GTR+G model. Within the tree, values from 1000 bootstrap reiterations are labelled at the nodes, and species and gene names are labelled at each of the tips. Nodes with values less than 50% were collapsed.
Watson et al. BMC Evolutionary Biology 2010 10:87 doi:10.1186/1471-2148-10-87