Gene Duplication Abnormality

**Semantic type:** Cell or Molecular Dysfunction

**Definition:** Generation of an extra copy of a particular gene in the genome. A gene duplication abnormality may occur by gene amplification, random breakage and reunion, retrotransposition or unequal crossing-over at meiosis. A gene duplication abnormality can be either heritable or somatic.

**Synonyms:** - Duplication - Duplication - Gene Duplication