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from Wikipedia, the free encyclopedia


In biology, mutations are changes to the genetic material (usually DNA or RNA).

Mutations can be caused by copying errors in the genetic material during cell division and by exposure to radiation, chemicals, or viruses, or can occur deliberately under cellular control during the processes such as meiosis or hypermutation.

Note:   The above text is excerpted from the Wikipedia article "Mutation", which has been released under the GNU Free Documentation License.
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