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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