TABLE 1

Polymorphism of the European sample and divergence

Fragment	L	K	S_obs	θ_obs	θ_exp	S_exp	h	Hd	Z_nS
1_ir	598	0.13	8	0.0043	0.0011–0.0099	2–18	6	0.879	0.452
2_in	590	0.05	3	0.0017	0.0005–0.0101	1–18	3	0.530	NA
3_in	465	0.04	10	0.0071	0.0007–0.0107	1–15	4	0.531	1.0*
4_in	600	0.06	0	0.0000	0.0011–0.0099**	2–18	1	0.000	NA
5_ir	465	0.02	0	0.0000	0.0007–0.0107*	1–15	1	0.000	NA
6_ir	287	0.05	0	0.0000	0.0000–0.0115*	0–10	1	0.000	NA
7_in	422	0.03	0	0.0000	0.0008–0.0102*	1–13	1	0.000	NA
8_in	319	0.04	1	0.0010	0.0000–0.0114	0–11	2	0.167	NA
9_ir	460	0.06	0	0.0000	0.0007–0.0101*	1–14	1	0.000	NA
10_in	569	0.05	10	0.0058	0.0006–0.0099	1–17	4	0.455	1.0*
11_ir	405	0.09	5	0.0041	0.0008–0.0106	1–13	3	0.530	0.867
12_ir	546	0.06	6	0.0036	0.0006–0.0103	1–17	3	0.621	0.829*

L, number of sites studied; K, divergence between D. melanogaster and D. simulans; S_obs, observed number of segregating sites; θ_obs, observed heterozygosity; θ_exp, expected heterozygosity (95% confidence intervals); h, number of haplotypes; Hd, haplotype diversity; Z_nS, linkage disequilibrium; ir, intergenic region; in, intron; and NA, not available. The expected number of segregating sites (S_exp) is calculated according to Tajima (1983) for n = 12 lines. Fragments significantly devoid of segregating sites are in italics. *, significant at the 0.05 level; **, significant at the 0.01 level.