# Table 2 Summary statistics for detecting selection using branch-site models of PAML

Foreground branch Null hypothesis Alternative hypothesis
-ln L Estimated parameters -ln L Estimated parameters
Branch A 46859.30 p0 = 0.66, p1 = 0.28 (p2+p3 = 0.06) 46851.6** p0 = 0.69, p1 = 0.27 (p2+p3 = 0.04)
ω0 = 0.23, ω1 = ω2 = 1   ω0 = 0.23, ω1 = 1.00, ω2 = 999
Branch B 46854.00 p0 = 0.53, p1 = 0.22 (p2+p3 = 0.25) 46837.66** p0 = 0.63, p1 = 0.26 (p2+p3 = 0.11)
ω0 = 0.23, ω1 = ω2 = 1   ω0 = 0.23, ω1 = 1.00, ω2 = 56.08
Branch C 46852.38 p0 = 0.53, p1 = 0.21 (p2+p3 = 0.36) 46831.76** p0 = 0.64, p1 = 0.26 (p2+p3 = 0.10)
ω0 = 0.23, ω1 = ω2 = 1   ω0 = 0.23, ω1 = 1.00, ω2 = 526.55
Branch D 46859.11 p0 = 0.61, p1 = 0.26 (p2+p3 = 0.13) 46842.30** p0 = 0.68, p1 = 0.27 (p2+p3 = 0.05)
ω0 = 0.23, ω1 = ω2 = 1   ω0 = 0.23, ω1 = 1.00, ω2 = 999
Branch E 46859.33 p0 = 0.70, p1 = 0.30 (p2+p3 < 0.01) 46859.33 p0 = 0.70, p1 = 0.30 (p2+p3 < 0.01)
ω0 = 0.23, ω1 = ω2 = 1   ω0 = 0.23, ω1 = ω2 = 1
1. Note: ** P <0.01, calculated from LRT. 