Cytosine to Thymidine Transition Abnormality

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** A point mutation involving the substitution of Thymidine (a pyrimidine base) for Cytosine (a pyrimidine base) in a DNA sequence from eukaryotic or prokaryotic organisms. This abnormality can be either heritable or occur somatically.

**Synonyms:** - Cytosine to Thymidine Mutation - Cytosine to Thymidine Transition