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.

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