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The 50% majority rule consensus tree for MP for the D loop of mtDNA from the four southern Isabela subspecies. The tree is unrooted, with bootstrap values on the nodes. Branch lengths are proportional to the number of steps. Three animals from a putative hybrid zone between vicina and guntheri are indicated as “v/g”. Other abbreviations: vic, vicina; gun, guntheri; van, vandenburghi; and mic, microphyes.
