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A '''spontaneous mutation''' is an alteration in [[DNA]] that is not hereditary, and which arises as a result of natural or environmental influence on the cells.
 
A '''spontaneous mutation''' is an alteration in [[DNA]] that is not hereditary, and which arises as a result of natural or environmental influence on the cells.
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If induced by an environmental factor, then it is called an induced mutation, which arises from the interaction of the DNA with a mutagen or outside agent.
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If induced by an environmental factor, then it is called an induced mutation, which arises from the interaction of the DNA with a [[mutagen]] or outside agent.
    
Many spontaneous mutations are probably due to mutagens in the environment, but some are due to DNA replication errors.
 
Many spontaneous mutations are probably due to mutagens in the environment, but some are due to DNA replication errors.
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