Table 4 MK tests of departures from a neutral model for eight GSC genes using polymorphism within both D. melanogaster and D. simulans and fixed differences between species

Gene	Synon Poly	Synon Div	Nonsyn Poly	Nonsyn Div	P-Value	FDR adj P-Value
cyc A	17	14	4	6	0.414	0.4997
mei-P26	24	44	0	0	NA	NA
nos	11	11	7	23	0.046	0.0663
piwi	84	54	26	22	0.416	0.4997
pum	77	51	11	5	0.506	0.5812
stwl	45	62	48	124	0.015	0.0245
Yb	86	62	80	149	0.00001	0.0010
zpg	53	14	6	4	0.230	0.2962

FDR adjusted P-values were determined as described in text. Significant results after FDR (P < 0.05) are in bold. MK, McDonald-Kreitman; GSC, germline stem cell; FDR, false-discovery rate.