Something capable of causing a gene-change. Among the known mutagens are radiation, certain chemicals and some viruses.
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Any agent that promotes a mutation or causes an increase in the rate of mutational events, e.g., radioactive substances, x-rays, or certain chemicals. [L. muto, to change, + G. -gen, producing]
- frame-shift m. a m., such as an acridine derivative, that causes a reading-frame-shift mutation; codons (base triplets) are read out of phase and different amino acid s are utilized.

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mu·ta·gen 'myüt-ə-jən n a substance (as a chemical or various radiations) that tends to increase the frequency or extent of mutation

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an external agent that, when applied to cells or organisms, can increase the rate of mutation. Mutagens usually only increase the number of mutants formed and do not cause mutations not found under natural conditions. Several kinds of radiation, many chemicals, and certain viruses can act as mutagens. Compare antimutagen.

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mu·ta·gen (muґtə-jən) [mutation + genesis] a chemical or physical agent that induces or increases genetic mutations above the spontaneous background level.

Medical dictionary. 2011.

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  • mutagen — MUTAGÉN, Ă, mutageni, e, adj., s.m. (biol.) (Agent) care produce o mutaţie (2). – Din fr. mutagene. Trimis de ana zecheru, 19.05.2004. Sursa: DEX 98  mutagén adj. m., pl. mutagéni; f …   Dicționar Român

  • Mutagen X — IUPAC name 3 Chloro 4 (dichloromethyl) 5 hydroxy 5H furan 2 one …   Wikipedia

  • mutagen — mu ta*gen (m[=u] t[.a]*j[e^]n), n. A chemical compound or other external influence (such as ionizing radiation) which causes mutations[3]. [PJC] …   The Collaborative International Dictionary of English

  • mutagen — mutagen. См. мутаген. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • mutagen — (n.) 1946, from MUTATION (Cf. mutation) + GEN (Cf. gen) thing that produces. Related: Mutagenic; mutagenesis; mutagenize …   Etymology dictionary

  • mutagen — mùtagēn m <N mn i> DEFINICIJA biol. fizikalni ili kemijski čimbenik koji izaziva mutacije [mutagene tvari] ETIMOLOGIJA v. mutacija + gen …   Hrvatski jezični portal

  • mutagen — [myo͞ot′ə jən, myo͞ot′əjen΄] n. [ MUTA(TION) + GEN] Biol. any agent or substance, as X rays, mustard gas, etc., capable of noticeably increasing the frequency of mutation mutagenic [myo͞ot′əjen′ik] adj. mutagenically adv …   English World dictionary

  • Mutagen — In genetics, a mutagen (Latin, literally origin of change) is a physical or chemical agent that changes the genetic material, usually DNA, of an organism and thus increases the frequency of mutations above the natural background level. As many… …   Wikipedia

  • mutagen — mu|ta|gen 〈Adj.〉 Mutationen auslösend [<Mutation + grch. gennan „erzeugen“] * * * Mu|ta|gen [Kurzw. aus Mutation (lat. mutatio = Veränderung) u. ↑ gen], das; , e: Sammelbez. für mutagen (↑ erbgutverändernd) wirkende, d. h. Erbänderungen… …   Universal-Lexikon

  • Mutagen — Mu|ta|gen 〈n. 11〉 chem. od. physikal. Agens, das Mutationen auslöst * * * Mu|ta|gen [Kurzw. aus Mutation (lat. mutatio = Veränderung) u. ↑ gen], das; , e: Sammelbez. für mutagen (↑ erbgutverändernd) wirkende, d. h. Erbänderungen (Mutationen)… …   Universal-Lexikon

  • mutagen — UK [ˈmjuːtədʒən] / US [ˈmjutədʒən] noun [countable] Word forms mutagen : singular mutagen plural mutagens biology a substance that produces a genetic mutation …   English dictionary

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