NCI Dictionary of Genetics Terms

The NCI Dictionary of Genetics Terms contains technical definitions for more than 200 terms related to genetics. These definitions were developed by the PDQ® Cancer Genetics Editorial Board to support the evidence-based, peer-reviewed PDQ cancer genetics information summaries.

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point variant
(poynt VAYR-ee-unt)
A genetic alteration caused by the substitution of a single nucleotide for another nucleotide. Also called point mutation.