Figure 3.

Maximum likelihood tree (42) of concatenated amino acid sequences of 12 H-strand encoded mitochondrial genes of 25 vertebrates. The mtREV-22 model (42) was used for the ML computations. The topology represents the Marsupionta tree, with marsupials and monotremes as sister groups. Branch lengths are according to genetic distance. Bootstrap and QP support values for branches a–f are shown in Table 1.