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. 2014 Feb 4;9(2):e87534. doi: 10.1371/journal.pone.0087534

Figure 1. Selection detection analyses of MHC class II α and β across species of Crocodylia.

Figure 1

Tests were performed by Bayesian inference of (A) MHC class II α exons 2 and 3 sequences, and (B) MHC class II β exons 2 and 3 sequences. Graphs show spatial change in dN/dS ratios (ω) and the posterior probabilities of diversifying selection across amino acid positions. Lines on the left-sided graphs present estimates of dN/dS ratios across amino acid positions; grey areas indicate 95% highest posterior probability dense intervals; and dashed lines show dN/dS values equal to one. Amino acid positions show significant (posterior probabilities >0.95) and highly significant diversifying selection (posterior probabilities >0.99), displayed by open squares and dark squares, respectively.