Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

mutator gene

noun mu·ta·tor gene \ˈmyü-ˌtāt-ər-\

Medical Definition of mutator gene

  1. :  a gene that increases the rate of mutation of one or more other genes—called also mutator

Seen and Heard

What made you want to look up mutator gene? Please tell us where you read or heard it (including the quote, if possible).