spontaneous mutation(redirected from natural mutation)
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Related to natural mutation: induced mutation
spontaneous mutation[spän′tā·nē·əs myü′tā·shən]
A mutation that occurs spontaneously, that is, in an individual not specifically exposed to a known mutagen.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.