Applications of SNPs molecular markers in Entomology
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Key Words：single nucleotide polymorphisms， insectology,DNA， genetic markers
Abstract：Single nucleotide polymorphisms (SNPs) mainly refer to sequence polymorphism in DNA caused by a single nucleotide variation at the genomic level.These include point mutations caused by single base transversions or conversions in which the frequency of one kind of allele is not less than 1%.Stable and reliable SNPs often involve two alleles.The use of SNPs markers in current research on insect genomes is still mainly restricted to a few model organisms; for example,the fruit fly,mosquito and silkworm.This paper summarizes the types of SNPs markers useful in entomological research,including taxonomy,genetic map construction,population genetics and elucidating molecular mechanisms of pesticide resistance.Future prospects for the application of SNPs,in fields such as population genetics,marker-assisted selection and evolution,are discussed.