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In biology, a mutation is a sudden, random change in hereditary material, such as a gene, that can alter an inheritable characteristic. Most mutations are not beneficial, since any change in the delicate balance of an organism that is highly adapted to its environment tends to be disruptive. As the environment changes, however, mutations can prove advantageous and thus contribute to evolutionary change in a species. Mutations may be spontaneous or induced by outside factors, such as what? Discuss
Source: The Free Dictionary