TABLE 1.

Summary of empirical data sets

Data set	Type	No. of sequences	No. of sites	Informative sites	Observed diversity (%)a	Tajima's Db	Reference
Candida albicans	Fungi	45	2553	58	0.7	0.936	Anderson et al. (2001)
Rana	Animal mtDNA	8	1143	257	14.8	—	Sumida et al. (2000)
Cowdria ruminantium	Bacteria	14	870	186	10.5	0.384	Jiggins (2002)
H. pylori	Bacteria	33	472	53	3.8	−0.531	Suerbaum et al. (1998)
Boletales	Fungi	31	639	265	17.1	—	Kretzer and Bruns (1999)
Norovirus	Virus	25	1617	103	2.2	−1.482	Rohayem et al. (2005)
Apodemus	Animal mtDNA	10	1140	275	14.7	—	Martin et al. (2000)
Nematode Wolbachia	Bacteria	10	444	98	13.0	0.899	Jiggins (2002)

^aMean proportion of sites that differ between any two sequences.

^bCalculated on sites with only two alleles segregating.