Results of selection test on Abpa27, Abpbg26 and Abpbg27.

aThe dN/dS ratio of the class of codons under positive selection is given with the percentage of codon sites predicted to be in that class.bThe p-value rejecting the model of neutral evolution (M8A) over that of selection (M8) is given.cSites with posterior probabilities greater than 0.9 are indicated in regular typeface; p>0.95 indicated in bold typeface and p>0.99 indicated in bold, underlined typeface.