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Table 5 Parameter estimates and likelihood ratio tests for the branch-site models

From: Genome-wide analysis of the Solanum tuberosum (potato) trehalose-6-phosphate synthase (TPS) gene family: evolution and differential expression during development and stress

Model p a LnLb Estimates of Parameters 2lc df p Positively selected sites
M1: Neutral (k=2) 1 -47271.650 p 0 =0.774, (p 1 =0.226)     
Branch-site models
Model A (I-1) 3 -47231.883 p 0 = 0.416, p 1 = 0.123, (p 2a +p 2b =0.461), ω2 =1.291 Model A vs M1: 79.535 2 0.000 Site for foreground lineage: 15 (at p>0.95)
Model A (II-1) 3 -47271.650 p 0 =0.774, p 1 = 0.226, (p 2a +p 2b =0.000), ω2=2.639 Model A vs M1: 0.000 2 1.000  
Model A (II-2) 3 -47271.650 p 0 = 0.774, p 1 = 0.226, (p 2a +p 2b =0.000), ω2 =1.000 Model A vs M1: 0.000 2 1.000  
Model A (II-3) 3 -47253.663 p 0 =0.740, p 1 = 0.214, (p 2a +p 2b =0.046), ω2=28.900 Model A vs M1: 35.974 2 0.000 Site for foreground lineage: 1 (at p>0.95)
Model A (II-4) 3 -47264.889 p0=0.707, p1= 0.207, (p 2a +p 2b =0.085), ω2=1.506 Model A vs M1: 13.523 2 0.001  
Model A (II-5) 3 -47257.978 p 0 =0.718,p 1 = 0.210, (p 2a +p 2b =0.072), ω2=3.022 Model A vs M1: 27.345 2 0.000  
  1. aThe number of free parameters for the ω ratios
  2. bLikelihood of the model
  3. c2(l1-l0)