back mutation

noun Genetics.

a mutation of an existing mutant gene that restores it to its previous form.

Origin of back mutation

First recorded in 1935–40

Also called reverse mutation.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for back mutation

back mutation

noun

genetics the reversion of a mutant to the original phenotype

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012