A Bayesian phylogenetic tree based on 175 sequences representing all the known globin families (alignment provided in Supplemental Data Fig. 3). The scale bar represents a distance of 0.1 accepted amino acid mutations per site.The numbers at the nodes represent Bayesian posterior probabillities.
Vinogradov et al. BMC Evolutionary Biology 2006 6:31 doi:10.1186/1471-2148-6-31