Adenosine to Guanosine Transition Abnormality

**Semantic type:** Cell or Molecular Dysfunction

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

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