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spontaneous mutation

   Also found in: Medical, Legal, Acronyms, Wikipedia, Hutchinson 0.02 sec.
spontaneous mutation [spän′tā·nē·əs myü′tā·shən]
(genetics)
A mutation that occurs spontaneously, that is, in an individual not specifically exposed to a known mutagen.


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These are spontaneous mutations in the germ line, and they just stay there," he says.
Problem paternity: older men seem more apt to have autistic kids by Seppa, N. / Science News
Development of resistance to fluoroquinolones is a stepwise process, involving spontaneous mutations in the genes encoding the target enzymes DNA gyrase and the topoisomerase IV.
Fluoroquinolone resistant Streptococcus pneumoniae by Klugman, Keith P. / Emerging Infectious Diseases
Spontaneous mutation in lacI transgenic mice: a comparison of tissues.
Inhaled Crocidolite Mutagenicity in Lung DNA by Keith, Gerard / Environmental Health Perspectives
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