Figure 4From: Adaptive molecular evolution of the Major Histocompatibility Complex genes, DRA and DQA, in the genus EquusBayesian reconstruction of unique DRA alleles in Equidae. Sequence data (243 bp) was partitioned by codon position and a GTR nucleotide substitution model was used, with equal rates across sites. Analyses were run with 6 chains for 7,000,000 generations, burnin = 17,500 trees. Posterior probabilities > 50% are reported at the nodes. Identical alleles across multiple species are indicated by the appropriate colored bars (see legend) and names were omitted from the tree: Eqbu-DRA*01 = Eqgr-DRA*02 = Eqze-DRA*02; Eqbu-DRA*04 = Eqki-DRA*02; Eqbu-DRA*07 = Eqas-DRA*01 = Eqze-DRA*01; Eqbu-DRA*08 = Eqca-DRA*04; Eqze-DRA*03 = Eqas-DRA*04; Eqbu-DRA*05 = Eqze-DRA*04; Eqbu-DRA*03 = Eqas-DRA*02 = Eqhe-DRA*02 = Eqki-DRA*01. Sequences from Bos taurus (DQ821713), Ovis aries (Z11600) and Sus scrofa (AY754888) were used as outgroups.Back to article page