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transposon |
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transposon [¦tranz′pō‚zän] (genetics) A genetic element which comprises large discrete segments of deoxyribonucleic acid and is capable of moving from one chromosomal site to another in the same organism or in a different organism. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Gentamicin resistance occurs in most strains that carry the SCCmec type II element but is conferred by the aac6'-aph2" gene elsewhere on the chromosome and is frequently carried by transposon Tn4001 (11,16). Genetic changes can be brought about by transposons rearranging the genome--often in response to changes in the environment (bacteria). The results of a study of the patterns of a certain type of genomic change, called transposon insertions, among thirteen vertebrate species supported an earlier proposal of evolutionary trees showing that primates (human, chimpanzee, baboon) are more closely related to rodents like the mouse and rat than to carnivores like the cat and dog or artiodactyls like the cow and pig. |
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