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reverse mutation[ri′vərs myü′tā·shən]
A mutation in a mutant allele which makes it capable of producing the nonmutant phenotype; may actually restore the original deoxyribonucleic acid sequence of the gene or produce a new one which has a similar effect. Also known as back mutation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.