Additional file 4.

Figure S4. Phylogenetic trees of four mammalian species estimated by maximum likelihood method under GTR substitution model based upon the concatenated CDS regions from nuclear genes (A) and mitochondrial genes (B). Numbers below the branch are bootstrap supporting ratios and numbers above the branch are the average substitution numbers per site, which are related to Ka and Ks by where Na and Ns are numbers of non-synonymous and synonymous sites.

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Zhao et al. BMC Genomics 2010 11:201   doi:10.1186/1471-2164-11-201