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Table 5 Tests for positive selection among codons of expansin genes using site models

From: Soybean (Glycine max) expansin gene superfamily origins: segmental and tandem duplication events followed by divergent selection among subfamilies

Models p a Estimates of parameters InL 2l Positively selected sitesb
M0 1 ω = 0.133 -14554.8   None
(one-ratio)      
M3 5 p0 = 0.22607 p1 = 0.55054 p2 = 0.22339 -14274.8 560(M3 vsM0) None
(discrete)   ω1 = 0.02570 ω2 = 0.11359 ω3 = 0.33505    
M7 2 p = 0.99176 q = 5.71801 -14266.9   Not allowed
(beta)      
M8 4 p0 = 0.99999 p = 0.61117 q = 1.88462 -16630.6 4727.4(M8 vsM7) 42G,43T,123H,146S,153R,166S,172L*,
(beta&ɯ)   (p1 = 0.00001) ω = 2.02644    184G*,186A,190S*,195 M,196P*,198S,203Q
  1. Note: aNumber of parameters in the ω distribution.
  2. bPositive-selection sites are inferred at posterior probabilities > 95% with those reaching 99% shown in bold.
  3. *Sites were also found to be implicated in the functional divergence.