single nucleotide polymorphism

Other forms: single nucleotide polymorphisms

Definitions of single nucleotide polymorphism
  1. noun
    (genetics) genetic variation in a DNA sequence that occurs when a single nucleotide in a genome is altered; SNPs are usually considered to be point mutations that have been evolutionarily successful enough to recur in a significant proportion of the population of a species
    synonyms: SNP
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    type of:
    polymorphism
    (genetics) the genetic variation within a population that natural selection can operate on
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