Figure 1

Beta tubulin genealogy. Bayesian reconstruction of insect beta tubulin evolutionary relationships. Eighty-six tubulins were analyzed with Homarus americanus (Crustacea, Decapoda) beta tubulins as the outgroup. There are four beta tubulin clades ancestral to insects, the posterior probability scores in support of these clades are in larger font in the figure: β1 (0.74), β2 (0.77), β3 (1.00) and β4 (0.90). Removal of the 5 most divergent tubulins (Tcβ2b, Nvβ2b, c, Phβ4, and Apβ4) results in support >0.97 for each clade.