Figure 1.
Examples of nucleotide sequence chromatograms of kdr genotypes detected in Anopheles sinensis from Henan province. The position at codon 1014 of the para-type sodium channel gene is indicated by a rectangle box. A: three types of homozygote genotypes detected; and B: four types of heterozygote genotypes detected (K = G/T; Y = T/C; S = G/C).