Guanosine to Adenosine Transition Abnormality

**Semantic type:** Cell or Molecular Dysfunction

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

**Synonyms:** - Guanosine to Adenosine Mutation - Guanosine to Adenosine Transition