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Table 3 Results of likelihood-ratio tests comparing null models to those allowing a rate shift in the branches in Sternorrhyncha

From: Amino acid transporter expansions associated with the evolution of obligate endosymbiosis in sap-feeding insects (Hemiptera: sternorrhyncha)

  Model λ Background x 10 3 λ Sternorrhyncha x 10 3 Fold increase -ML # Parameters Likelihood ratio p- value
APC Single λ 1.2177 - - 34.31 1 1.562 0.204
  Multiple λ 0.7307 2.5049 3.43 33.52 2   
AAAP Single λ 1.3119 - - 38.33 1 6.633 0.008
  Multiple λ 0.3286 3.6802 11.20 35.01 2   
  1. λ represents the probability of gene duplication and loss per gene per million years.