Figure 3.

Maximum parsimony tree of the ground, Cocos, and vegetarian finch cr sequences. The tree drawn by using the paup program is a consensus of eight equally parsimonious trees of 125 steps based on the 50% majority rule. Consistency and retention indices are 0.90 and 0.89, respectively. Numbers above the branches indicate percent bootstrap recovery in 500 replications. Numbers below internal branches indicate the number of substitutions that are common to all eight trees. For symbol explanations see Fig. 2.