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Table 2 Likelihood scores (2Δl) for testing hypotheses for branch models in PAML

From: Adaptive evolution in the toxicity of a spider’s venom enzymes

Null Hypothesis Assumption made Models compared 2Δl P
A. (ωL = ωG) = ω0 ωL = ωG A X D 37.81 7.81 x 10−10
B. ωL = ω0 ωG = ω0 A X B 36.50 1.53 x 10−09
C. ωL = ω0 ωG free C X E 36.64 7.29 x 10−09
D. ωG = ω0 ωL = ω0 A X C 1.65 1.99 x 10−01
E. ωG = ω0 ωL free B X E 1.78 1.81 x 10−01
F. ω constant No Free Ratio A X K 675.84 5.99 x 10−56
A’. (ωL = ωG) ≤ 1 ωL = ωG D X H 46.50 9.18 x 10−12
B’. ωL ≤ 1 ωG = ω0 B X F 46.99 7.15 x 10−12
C’. ωL ≤ 1 ωG free E X I 48.72 2.96 x 10−12
D’. ωG ≤ 1 ωL = ω0 C X G 0.37 5.50 x 10−01
E'. ωG ≤ 1 ωL free E X J 2e-05 9.96 x 10−01