Table 2.

Genetic variability and departures from neutrality in two components of the V3 region

Sample, year	n	Snuc	Knuc	Dnuc	Saa	Kaa	Daa	Ssyn	Ksyn	Dsyn	d, %
V3 loop alone, 105 bp
3	15	10	3.07	−0.007	6	2.17	0.616	1	0.13	−1.182	2.8
4	11	13	5.2	0.751	7	3.73	2.275†	3	0.55	−1.585	5.0
5	23	13	3.46	−0.062	8	2.52	0.528	2	0.25	−1.202	3.3
6	15	18	8.25	1.991*	11	5.47	2.378†	3	1.07	0.475	7.9
7	13	21	5.68	−0.690	11	3.21	−0.382	5	1.26	−0.777	5.2
V3 flanking regions, 126 bp
3	15	15	4.40	−0.184	13	4.30	0.297	1	0.53	1.481	3.5
4	11	8	2.69	−0.063	6	2.29	0.467	2	0.76	0.346	2.1
5	23	12	2.83	−0.044	7	1.91	0.022	4	1.06	−0.746	2.2
6	15	15	4.07	−0.470	9	3.23	0.626	4	1.14	−0.235	3.2
7	13	18	4.69	−0.812	9	3.31	0.553	7	1.95	−0.514	3.7

Symbols as for Table 1 except: d, mean of the pairwise nucleotide distances for each sample. 

^*P < 0.05;  

^†P < 0.001.