Figure 4From: The homeodomain complement of the ctenophore Mnemiopsis leidyi suggests that Ctenophora and Porifera diverged prior to the ParaHoxozoaTrees for other classes. The remaining class trees are as follows: (A) POU class; (B) TALE class; (C) LIM class; and (D) SIX class. See Figure 2 for an explanation of tree formatting, colour codes and species codes. Branch lengths are presented uniformly for display purposes. Actual branch lengths can be viewed by opening the Newick-formatted tree file (Additional File 4), which also includes bootstrap and Bayesian support values, in a tree viewing/editing program such as FigTree [53].Back to article page