Table 1.

Spearman Correlation Coefficients (ρ) between Gene Expression Bias (the Ratio of Male to Female Mean Expression Levels) and K_A/K_S

	All		Male		Unbiased		Female
Dmel–Dsec	0.098	***	0.181	***	−0.010	ns	−0.034	*
Dmel–Dyak	0.146	***	0.269	***	−0.020	ns	−0.039	*
Dpse–Dper	0.147	***	0.076	**	0.017	ns	0.036	ns
Dpse–Dmir	0.187	***	0.167	***	−0.010	ns	−0.033	ns
Dpse–Dlow	0.179	***	0.109	**	0.013	ns	0.026	ns
Dpse–Daff	0.226	***	0.229	***	0.019	ns	0.026	ns

Note.—Dmel, Drosophila melanogaster; Dsec, Drosophila sechellia; Dyak, Drosophila yakuba; Dpse, Drosophila pseudoobscura; Dper, Drosophila persimilis; Dmir, Drosophila miranda; Dlow, Drosophila lowei; Daff, Drosophila affinis; *** P < 0.001, ** P < 0.01, * P < 0.05, and ns, not significant.