Figure 2

Phylogenetic relationships of α-globin genes. ML phylogeny of α-globin genes from 36 species of teleosts, and western clawed frog (Xenopus tropicalis) as the outgroup species. Numbers on nodes show bootstrap values and Bayesian posterior probabilities where topology is concordant, -- denotes support lower than 50/0.50. Sequences are colored according to timing of expression^{11, 45}; embryonic (red), adult (blue), embryonic and adult (purple) and unknown (black). For each gadiform α-globin gene the phylogenetic tree is shown separately. Some branches are shortened for convenience, which is indicated by gaps.