NCI Dictionary of Genetics Terms
Welcome to the NCI Dictionary of Genetics Terms, which contains technical definitions for more than 150 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.
- missense mutation
- listen(MIS-sens myoo-TAY-shun)
- A single base pair substitution that alters the genetic code in a way that produces an amino acid that is different from the usual amino acid at that position. Some missense mutations will alter the function of the protein.