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- Single-nucleotide polymorphism
Single nucleotide position in genomic DNA at which different sequence alternatives exist
In genetics and bioinformatics, a single-nucleotide polymorphism (SNP ; plural SNPs) is a germline substitution of a single nucleotide at a specific position in the genome. Although certain definitions require the substitution to be present in a sufficiently large fraction of the population (e.g. 1% or more), many publications do not apply such a frequency threshold. Wikipedia
