Figure 1.

Phylogeny of species analysed. Generalised phylogeny of the species and clades analysed. The topology of the tree is based on an accepted mammalian phylogeny [32]. Branch lengths in substitutions per codon are calculated under the M0 model of PAML [11].

Smith et al. BMC Evolutionary Biology 2012 12:122   doi:10.1186/1471-2148-12-122
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