Table 1. Sequence diversity values, fixation indices and sources of variation in p53 sequences from M. lusitanicus and M. duodecimcostatus.

Species (region)	Number of sequences	Sequence diversity				Fixation indices and source of variation
		Number of segregating sitesa	π±s.d.b	hb	Hd±s.d.b	φST	φCT	φSC	% Among groups	% Within populations
Microtus lusitanicus	104	7	0.0046±0.0027	12	0.748±0.026
(All populations)						0.576				42.37
(Northern group)/(southern group)						0.697	0.670	0.080	67.04	30.32
(Northern group)	60	6	0.0034±0.0021	11	0.697±0.051	0.129				87.09
(Southern group)	44	2	0.0007±0.0001	3	0.403±0.076	0.055				94.51
Microtus duodecimcostatus	88	9	0.0017±0.0002	10	0.629±0.055
(All populations)						0.190				81.04

^aindel of 10 bp not included.

^bπ, nucleotide diversity; h, number of haplotypes; Hd,haplotype diversity.