Unique sequences in the cox1 gene of indian mosquito species

A DNA barcode is a short DNA sequence from a standardized region of the genome used for identifying species. The essential aim of DNA barcoding is to use a large-scale screening of one or more reference genes in order to assign unknown individuals to species, and to enhance discovery of new species (Hebert et al., 2003). Biological taxonomists apply this principle to species classification. The first application of using the DNA sequences in systematic biological taxonomy (also called DNA taxonomy) was conducted by Tautz et al., (2002) and then , Hebert et al., (2003) proposed the concept of DNA Barcoding and suggested its use for a single mtDNA gene, mitochondrial cytochrome c oxidase I (COI), as a common sequence in animal DNA barcoding studies. A unique DNA is a stretch of DNA present in only a single copy in a cell. Genomes contain all the vital genetic solutions discovered by our ancestors in response to all the environmental challenges that they had successfully overcome in the course of evolution. These solutions are maintained by natural selection in the form of unique DNAs. These DNAs give us a chance to successfully overcome similar environmental challenges again and again. The goal of this article is to provide an overview of the rapidly expanding applications of molecular markers (unique sequences within the COX 1 gene) for identifying mosquito species. In the present study, we identify unique sequences in the mosquito COX1 gene using SAS tool.