the action or process of mutating.
the mutation of ethnic politics into nationalist politics
the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.
The same pattern appears in tumor-associated genes undergoing either loss-of-function mutation or rearrangements.
regular change of a sound when it occurs adjacent to another, in particular.