Results of maximum likelihood models of exon 2 of the DQB locus in B. musculus.

Positive selected sites were identified using empirical Bayes procedure. Sites inferred under selection at the 99% level are listed in bold, and those at the 95% level are in italics, the putative PBR sites are underlined. For models 7 and 8, p and q are the shape parameters of β function. (P) is the number of parameters in the ω distribution, (K) the estimated transition/transversion rate ratio, (ω) the selection parameter and (pn) the proportions of sites that fall into the ωn site class.Results of maximum likelihood models of exon 2 of the DQB locus in B. musculus.