Divergent evolution and molecular adaptation in the Drosophila odorant-binding protein family: inferences from sequence variation at the OS-E and OS-Fgenes

Table 1 Likelihood Ratio Test (LRT) results and Bayesian prediction of amino acid sites under positive selection.

Foreground^a	Test-1	Test-2	Positively selected sites^c
	P-value	P-value^b	BEB (PP > 0.95)
b1	< 0.001	0.140 (0.070)	74, 75, 78, 79, 81, 82, 94
b2	0.084	-	-
b3	< 0.001	0.002 (0.001)	4, 78, 115, 120
b4	0.002	0.031 (0.015)	23, 86
b5	0.114	-	-
b6	0.994	-	-

Results of the Branch-site analysis.
^a Lineages defined as foreground in the branch-site analysis (Figure 5). ^b The number in parenthesis indicates the P-values under the one-sided test with the asymptotic null distribution (a 50:50 mixture of point mass 0 and χ²) in [77]. ^c Amino acid position numbering according to the MSA in Figure 2. Amino acid positions involving changes in the physicochemical properties influenced by positive selection are highlighted in bold. BEB, Bayes Empirical Bayes results [78].

ISSN: 2730-7182