Fig. 2
From: Rapid divergence of a gamete recognition gene promoted macroevolution of Eutheria
Phylogenetic analysis of Zan DNA sequence divergence. Shown is the gene tree constructed by Bayesian analysis of 112 aligned Zan sequences, with ZanL from Chinese soft-shelled turtle as outgroup. Red dots denote nodes lacking statistical support (5/112 nodes = 4.5%). Note the supported grouping of cetaceans with artiodactyls, as well as the monophyletic grouping of all species into their respective Orders and of all Orders into their respective Superorders. Taxonomy per [84]