Table 3.

Results of frequency spectrum-based tests to detect selection patterns in coding regions of recombination genes in Z. mays ssp. parviglumis

Gene	Length (bp)	N	Fu & Li D	Fu & Li F	Tajima’s D
					Value	Percentile of empirical distributiona
Dmc1	1035	8	−0.72824	−0.70225	−0.16078	69.1
Mlh1	1589	6	0.03616	0.06771	0.12841	78.6
Mre11A	2121	6	1.22721	1.40326	0.97353	96.2
Mre11B	1792	8	−1.20536	−1.33713	−0.80674	37.9
Msh4	2415	8	−1.19426	−1.48169	−1.28039	17.2
Mus81-1	1353	NA	NA	NA	NA	NA
Rad51A1	1023	8	−1.68085	−1.83197	−1.06800	26.7
Rad51A2	658	7	0.77544	0.80139	0.33464	85.9
Recq4	3528	9	0.13432	0.02242	−0.27857	64.6
Spo11-1	1158	9	−1.28858	−1.38186	−0.72935	26.5
Spo11-2	854	9	−1.54205	−1.71638	−1.06063	26.7

None of the values indicate statistically significant departure from neutral evolution patterns

^a Percentile relative to the genome-wide distribution of Tajima’s D values from a survey of 703 random polymorphic loci in maize and Z. mays ssp. parviglumis [22]