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Table 5 Evaluation of the fitting of models of codon evolution in the brown bear

From: Evolution of major histocompatibility complex class I and class II genes 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

  1. 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.