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defined:
Common, but minute, variations that occur in human DNA at a frequency of one every 1,000 bases. These variations can be used to track inheritance in families. SNP is pronounced "snip".
explained:
Listen to a detailed explanation. Dr. Francis Collins, former director of the National Human Genome Research Institute, defines single nucleotide polymorphisms (SNPs).
relatedterms:
deoxyribonucleic acid (DNA), inherited, nucleotide, polymorphism, genetic code (ATGC)
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