TABLE 2.

Summary statistics of Tajima's D and Fu and Li's D estimations

	Parental gene (Ins2)					New gene (Ins1)
Parameter	Gene	5′, 10 kb	5′, 100 Mb	3′, 8 kb	3′, 10 kb	Gene	5′, 8 kb	5′, 10 kb	5′, 12 kb	3′, 10 kb
Tajima's D	−2.1168**	0.2092	0.4482	0.0484	−0.6193	−1.7289*	−0.2583	2.3793**	0.3347	−0.0669
Fu and Li's D	−2.9607**	1.3157*	1.1864	0.3575	1.2632	−1.8817*	−0.4590	1.0277	0.0219	−0.0010
l (bp)	605	1379	809	843	1643	118	1045	597	1020	936
n	15	24	20	22	24	14	12	24	14	26
S	20	19	5	5	18	6	2	11	8	10
π	0.0052	0.0041	0.0020	0.0017	0.0024	0.0085	0.0012	0.0091	0.0031	0.0030
θ	0.0107	0.0039	0.0017	0.0016	0.0029	0.0164	0.0013	0.0054	0.0028	0.0031

l, sequence length; n, sample size; S, number of segregating sites; π, nucleotide diversity; θ, average number of segregating sites. For the gene region, we presented the statistics from the intron region as the gene's representative values, because the intron region is less subject to natural selection than the exon regions. *P < 0.05, **P < 0.01.