. Author manuscript; available in PMC: 2013 Oct 10.

Published in final edited form as: J Mol Evol. 2012 Oct 10;75(1-2):43–54. doi: 10.1007/s00239-012-9520-5

Table 2.

Genetic variation in MLST genes

Species	Dataset	Sequence length (bp)	No. of alleles	All isolates^a				STs only^a
Species	Dataset	Sequence length (bp)	No. of alleles	θ_π	θ_w	D	π/K	θ_π	θ_w	D	π/K
S. aureus	arcC	453	12	0.0041	0.0052	−0.5813	0.0066	0.0059	0.0074	−0.6735	0.0095
	MLST average	456	11	0.0046	0.0063	−0.5502	0.0173	0.0068	0.0089	−0.6409	0.0258
	MLST concatenate	3,195	28	0.0043	0.0062	−0.9793	0.0142	0.0068	0.0088	−0.8921	0.0221
S. epidermidis	arcC	465	9	0.0136	0.0063	3.1175	0.0527	0.0112	0.0088	0.9383	0.0433
	MLST average	429	8	0.0053	0.0059	−0.3734	0.0192	0.0063	0.0083	−0.8041	0.0228
	MLST concatenate	3,003	29	0.0055	0.0059	−0.2289	0.0193	0.0064	0.0081	−0.8014	0.0227

Symbols Tajima’s (θ_π) and Watterson’s (θ_w) per-site mutation rate, Tajima’s D, ratio of intraspecific polymorphism to interspecific divergence (π/K)