Table 3.

Parameter estimates and likelihood ratio tests for the branch model

Model	p a	LnLb	Estimates of Parameters	2△lc	df	p	Positively selected sites
M0 (one ratio model)	1	-47935.395	ω=0.143	-	-	-	None
Branch-specific model (Model 2: two ratios)
Estimate ω for I-1	2	-47935.222	ω0=0.143, ωI1= 0.083	Model 2 Vs M0: 0.346	1	0.556	-
Estimate ω for II-1	2	-47930.020	ω0= 0.146, ωII1= 0.083	Model 2 Vs M0: 10.750	1	0.001	-
Estimate ω for II-2	2	-47924.924	ω0= 0.147, ωII2= 0.065	Model 2 Vs M0: 20.943	1	0.091	-
Estimate ω for II-3	2	-47935.383	ω0= 0.143, ωII3= 0.147	Model 2 Vs M0: 0.024	1	0.000	-
Estimate ω for II-4	2	-47934.740	ω0= 0.143, ωII4= 0.199	Model 2 Vs M0: 1.310	1	0.252	-
Estimate ω for II-5	2	-47935.385	ω0= 0.143, ωII5= 0.148	Model 2 Vs M0: 0.020	1	0.888	-

^aThe number of free parameters for the ω ratios

^bLikelihood of the model

^c2(l₁-l₀)