back mutation


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back mutation

n.
A reversal process whereby a gene or other nucleotide sequence that has undergone mutation returns to its previous state.

back mutation

n
(Genetics) genetics the reversion of a mutant to the original phenotype
References in periodicals archive ?
Since this class is unlikely to be recreated by back mutation, the "ratchet" clicks one notch.
However, in a large sexual population, a low frequency of beneficial, compensatory, or back mutation may be adequate to prevent the eventual entry into a mutational meltdown.
Each locus mutates from a wild-type to a deleterious allele at rate [Mu]; back mutation is assumed to be negligible.