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Midpoint-rooted tree demonstrating the “clock-like” nature of chimpanzee mtDNA evolution. Twenty-six P. troglodytes and one P. paniscus sequence were analyzed using the BMCMC approach in MrBayes. The majority-rule consensus tree is presented. Branch tips are colored by species or subspecies. Relationship patterns are the same as in figure 3, but sequence names are removed for clarity. All nodes are well supported, and posterior probabilities of all major nodes are 100%.
