Table 2. DNA polymorphisms of kdr gene in populations under different insecticide selection pressures.

Strain	Generation	Number of sequences	Number of sites	h	Hd	Pi
Lab Selection	1	66	480	39	0.901	0.09702
	6	81	480	17	0.513	0.04526
IS strain	10	62	480	13	0.45	0.02003
	14	65	480	11	0.374	0.04052
	18	66	480	9	0.281	0.00778
	22	57	480	2	0.064	0.00014
	26	53	480	1	0	0
	30	62	480	1	0	0
MS strain	10	72	480	15	0.438	0.01436
	14	86	480	14	0.281	0.00422
	18	76	480	13	0.356	0.01741
	22	63	480	5	0.124	0.00104
	26	57	480	3	0.07	0.01673
	30	64	480	1	0	0
NS strain	10	65	480	20	0.638	0.03574
	14	76	480	24	0.752	0.04275
	18	71	480	28	0.725	0.04657
	22	66	480	34	0.832	0.09714
	26	78	480	32	0.876	0.08175
	30	68	480	36	0.891	0.0398

h: Number of Haplotypes, Hd: Haplotype diversity, Pi: Nucleotide diversity.