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Table 1 Table summarizing codon-based tests for positive selection

From: Evolution of MHC class I genes in the endangered loggerhead sea turtle (Caretta caretta) revealed by 454 amplicon sequencing

Likelihood models

Statistical test

P-value

Estimate for ω >1

Proportion of sites ω >1

Codon sites ω >1

M1a vs M2a

18.212

0.00011

3.41529

0.20074

121,158,159

M7 vs M8

23.862

6.58E-06

3.02509

0.26839

121,158,159,161,163,164

M8a vs M8

15.922

3.30E-05

   
  1. ω = (dN / dS) where dN represents the number of non synonymous substitutions and dS the number of synonymous substitutions. Numbers of codon sites refer to position in the reading frame.