Table 1.

Population Diversity Estimates for Human and Chimpanzee Serotonin Genes.

		HTR2A			SLC6A4
Sample	na	Sb	θπc	TDd	S	θπ	TD
Northern European	20	22	0.129	0.37	14	0.042	0.02
Italian	20	17	0.066	−1.02	20	0.056	−0.24
Russian	20	21	0.115	0.09	10	0.037	0.80
Chinese	20	14	0.101	1.29	11	0.036	0.36
Japanese	20	11	0.084	1.53	11	0.027	−0.69
Southeast Asian	20	16	0.080	−0.25	10	0.023	−0.82
Mexican	20	23	0.126	0.09	13	0.042	0.29
Middle Eastern	20	14	0.096	1.05	13	0.039	−0.03
North African	14	12	0.113	2.27	15	0.059	0.68
Sub-Saharan African	18	31	0.143	−0.67	26	0.081	0.00
Global	192	47	0.113	−0.78	38	0.047	−1.00
Chimpanzee	40	26	0.109	−0.20	17	0.045	0.19

^aNumber of chromosomes sampled.

^bRefers to number of silent site SNPs (synonymous and intron sites; see Materials and Methods).

^cAverage pairwise sequence differences (%).

^dTajima's D analysis of SNP frequency spectrum.