Radiation Mutagenesis - Research Article from World of Microbiology and Immunology

Robin Cook
This encyclopedia article consists of approximately 3 pages of information about Radiation Mutagenesis.
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Mutations are caused by DNA damage and genetic alterations that may occur spontaneously at a very low rate. The frequency of these mutations can be increased by using special agents called mutagens. Ionizing radiation was the first mutagen that efficiently and reproducibly induced mutations in a multicellular organism. Direct damage to the cell nucleus is believed to be responsible for both mutations and other radiation mediated genotoxic effects like chromosomal aberrations and lethality. Free radicals generated by irradiation of the cytoplasm are also believed to induce gene mutations even in the non-irradiated nucleus.

There are many kinds of radiations that can increase mutations. Radiation is often classified as ionizing or non-ionizing depending on whether ions are emitted in the penetrated tissues or not. X rays, gamma rays (&ggr;), beta particle radiation (), and alpha particle () radiation (also known as alpha rays) are ionizing form of radiation. On the other...

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This section contains 730 words
(approx. 3 pages at 300 words per page)
Buy the Radiation Mutagenesis Encyclopedia Article
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World of Microbiology and Immunology
Radiation Mutagenesis from World of Microbiology and Immunology. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
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