Table 4

Bayes factor comparisons between model M0 and M1 for each ERV gene showing also the number of generations for each Bayesian inference.

Gene

Model comparison1

Number of generations

2*loge B10§

M0

M1

M0

M1


pol

*1-HKY+Γ

+3-HKY+Γ

3,000,000

6,000,000

0.049


gag

*1-K80+Γ

+3-K80+Γ

8,000,000

13,000,000

0.033


env (class A)

*1-HKY+Γ

+3-HKY+Γ

3,000,000

10,000,000

-0.061


env (class B)

*1-K80

+3-K80

3,000,000

3,000,000

0.016


env (class E)

*1-HKY+Γ

*1-GTR+Γ

3,000,000

3,000,000

0.0025


*1-HKY+Γ

+3-HKY+Γ

3,000,000

3,000,000

0.0014


1. HKY = Hasegawa-Kishino-Yano model [78]; K80 = Kimura 2-parameter [79]; Γ = gamma distribution.

* 1 = one model for the whole gene.

+ 3 = partition of the data per codon position.

§ Values represent twice the loge of the Bayes factor (B10) in the comparison of models M0 and M1 (2*loge B10). Positive values below 2 indicate no evidence against M0 [71,80]

Nascimento et al. BMC Evolutionary Biology 2011 11:139   doi:10.1186/1471-2148-11-139

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