Table 5

Evaluation of the fitting of models of codon evolution in the brown bear
Model ln L Parameters Δ AIC
MHC class I
M0 −1725.4 ω = 0.474 313.2
M7 −1587.7 39.8
M8 −1565.9 p0 = 0.743 p1 = 0.257 ω1 = 2.325 0 – best
MHC class II DRB
M0 −694.5 ω = 2.327 117.1
M7 −646.7 23.6
M8 −632.9 p0 = 0.652 p1 = 0.348 ω1 = 12.181 0 – best
MHC class II DQB
M0 −402.8 ω = 0.322 9.5
M7 −397.1 0 – best
M8 −396.8 p0 = 0.717 p1 = 0.283 ω1 = 1.489 3.5

Parameter description : ω – dN/dS per all sites; ω1 – estimated value of ω for sites under positive selection, p0 – proportion of sites with ω ≤ 1 ; p1 – proportion of sites with ω > 1.

Kuduk et al.

Kuduk et al. BMC Evolutionary Biology 2012 12:197   doi:10.1186/1471-2148-12-197

Open Data