Figure 2. Evidence for ADAMTS9 sequence convergence in long-lived mammals. (A) Maximum-likelihood gene tree constructed using the best fitting nucleotide substitution model (GTR+G) demonstrates a monophyletic grouping of the long-lived mammals. (B) Plot of the numbers of divergent versus convergent substitutions occurring between all independent pairs of branches of the species tree. The microbat-naked mole-rat comparison has the highest level of convergence as well as the largest distance from the trendline.