Passerine MHCIIβ gene tree. Gene tree of the MHCIIβ exon 2 sequences of Nesospiza and sequences of several other passerine species obtained from GenBank. A Bayesian analysis of 159 bp of sequences, with independent mutational models applied to each codon position (Position 1: TIM3ef + I + G; Position 2: TVM + G; Position 3: TPM2uf + G). Bayesian posterior probabilities are indicated at the nodes; values < 0.95 are not shown.
van Rensburg et al. BMC Evolutionary Biology 2012 12:143 doi:10.1186/1471-2148-12-143