https://doi.org/10.1351/goldbook.M04074
A heritable change in the
nucleotide
sequence
of genomic
DNA
(or
RNA
in
RNA
viruses), or in the number of
genes
or
chromosomes
in a cell, which may occur spontaneously or be brought about by chemical mutagens or by radiation (induced mutation).
Source:
PAC, 1992, 64, 143. (Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)) on page 161 [Terms] [Paper]