Figure 3.

Phylogenetic relationships among alpha tubulin copies based on bayesian analysis of the exon nucleotide alignment. Classes defined by intron structure in Figure 2 are indicated by labels on branches. Species are indicated by colours: monogonont outgroups = grey; A. ricciae = red; A. vaga = green; M. quadricornifera = magenta; P. flaviceps = blue. Putative copies homogenized by gene conversion are indicated by curly brackets.