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Pronunciation: tranz-po'son

Definition: A segment of DNA (an R-factor gene) that has a repeat of an insertion sequence element at each end that can migrate from one plasmid to another within the same bacterium, to a bacterial chromosome, or to a bacteriophage; the mechanism of transposition seems to be independent of the host's usual recombination mechanism.

See: jumping gene, transposable element

[L. transpono, pp. transpositum, to transfer, + -on]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.