单词	SNP
释义	SNP noun ˈsnip  : a variant DNA sequence in which the purine or pyrimidine base (such as cytosine) of a single nucleotide has been replaced by another such base (such as thymine) Word History Etymology single nucleotide polymorphism First Known Use 1991, in the meaning defined above Medical Definition SNP noun ˈsnip  : a variant DNA sequence in which the purine or pyrimidine base (as cytosine) of a single nucleotide has been replaced by another such base (as thymine) Most SNPs occur in places in the genome that aren't used for making proteins—the so-called junk DNA. But the few SNPs that land squarely in a gene or in a regulatory region near a gene can alter characteristics influenced by that gene … Christen Brownlee, Science News The ultimate goal of the pharmaceutical industry is to find the SNPs involved with major diseases and use them to find specific molecular targets for drugs. Tim Friend, USA Today called also single nucleotide polymorphism
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