/ Thesaurus / M Synonyms of mutant gene Find synonyms for: Noun1. mutant gene, gene, cistron, factorusage: a gene that has changed so that the normal transmission and expression of a trait is affectedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language