mutagen


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mutagen

 [mu´tah-jen]
an agent that induces genetic mutation.

mu·ta·gen

(myū'tă-jen),
Any agent that promotes a mutation or causes an increase in the rate of mutational events, for example, radioactive substances, x-rays, or certain chemicals.
[L. muto, to change, + G. -gen, producing]

mutagen

(myo͞o′tə-jən, -jĕn′)
n.
An agent, such as a chemical, ultraviolet light, or a radioactive element, that can induce or increase the frequency of mutation in an organism.

mu′ta·gen′ic adj.
mu′ta·gen′i·cal·ly adv.
mu′ta·ge·nic′i·ty (-jə-nĭs′ĭ-tē) n.

mu·ta·gen

(myū'tă-jen)
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]

mutagen

Any agent capable of changing the structure of DNA without immediately killing the cell concerned. Any surviving MUTATION may be perpetuated to all descendants of the cell. Mutagens include ionizing radiation such as ultraviolet light, X-rays, gamma rays and cosmic rays and a wide range of chemical substances including the tars in cigarette smoke.

mutagen

an agent that is capable of increasing the MUTATION rate in an organism, for example, X-rays, ultraviolet light, mustard gas.

mu·ta·gen

(myū'tă-jen)
Any agent that promotes a mutation or increases rate of mutational events.
[L. muto, to change, + G. -gen, producing]
References in periodicals archive ?
In this regard, different physical mutagens including X-rays, -rays, ultraviolet (UV) rays or chemical mutagens such as N-methyl-N'- nitro-N-nitrosoguanidine (MNNG), ethyl methanesulfonate (EMS) and ethidium bromide (EtBr) have been reported (Abdelghani et al., 2005; Iftikhar et al., 2010).
The effect of chemical and physical mutagens on [M.sub.1] plants of P fistulous were observed, at an interval of one week during the growth of the plants.
The antigenotoxic evaluation of the extract was carried out by pre-treating the mice with MMS mutagen prior to extract treatment; should there be reduced counts of micronuclei after the extract administration, then the natural compounds in the plant extract must have repaired the DNA damage induced by MMS thus antigenotoxic [6].
Detection of carcinogens as mutagens: bacterial tester strains with R factor plasmids.
The results of the present work indicated that by increase in concentration of mutagen beyond a certain limit not only length decreases but also complete necrosis was observed.
The contrast in these findings suggested that different plants would respond differently to mutagenic treatments of specific dosage or concentration; it may therefore be imperative to compare the effects of different mutagens on growth parameters of crops to arrive at a valid conclusion.
Four types of mutagen tubes (balloon, wavy, swollen and thin) were observed in treatments in different percentage, the maximum percentage of mutagen tubes was wavy type (20.836%) then Balloon (2.170%), Swollen (0.217%), Thin (0.054%), but Branch type was not observed in all treatments, that means Date palm pollen extract is Improved pollen tube morphology of Solanum melongena L.
A literature review revealed that the mutagen metaphor has been present in research for a long time, although it has not been made explicit.
typhimurium to the following different mutagens: TA100 to MNNG (5-10 [micro]g/Petri dish), S.
Identification of oxidized and reduced forms of the strong bacterial mutagen (z)-2-chloro-3-(dichloromethyl)-4-oxobutenoic acid (mx) in extracts of chlorine-treated water.
She was giving a keynote presentation on 'Environmental Carcinogens: Exposure and Impacts on Children's Health,' at the Sixth International Conference on Environmental Mutagens in Human Populations.