/ Thesaurus / D Synonyms of dominant gene Find synonyms for: Noun1. dominant gene, gene, cistron, factorusage: gene that produces the same phenotype in the organism whether or not its allele identical; "the dominant gene for brown eyes"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language