Multiple Transition Abnormalities

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** Multiple point mutations in a DNA sequence from eukaryotic or prokaryotic organisms in which each mutation occurs by substitution of a purine base for a different purine base or a pyrimidine base for another pyrimidine base. These abnormalities can be either heritable or occur somatically.

**Synonyms:** - Multiple Transition Mutations - Transition Mutations