single nucleotide polymorphism
noun
: snp
Although all humans share 99.9 percent of their genetic material, single-letter differences in our DNA sequences—known as single nucleotide polymorphisms, or SNPs ("snips")—ensure that each individual is unique.—
Alison McCook, Scientific American
Alison McCook, Scientific AmericanIn DNA dialect, if the nucleotide letter T appears instead of C, or G where usually there's A, the gene is said to contain a single nucleotide polymorphism.—Jeff Wheelwright, Discover
Jeff Wheelwright, DiscoverCite this Entry
“Single nucleotide polymorphism.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/single%20nucleotide%20polymorphism. Accessed 31 Oct. 2025.
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