Transposable elements
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Discuss the similarities and differences of transposable elements in E. coli, yeast, plants, and Drosophila.
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Short review of transposable elements in E. coli, yeast, plants, animals, and Drosophila. Web references provided.
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Tranposable elements are mobile DNA. Sometimes they are called jumping genes. There are two classes of transposable elements in eukaryotes. Class I retrotransposons (either flanked by long terminal repeats or simple repeats) must make an RNA intermediate to facilitate integration into a genome. Class II DNA transposons, which are flanked by short terminal repeats, can directly insert into the genome without an RNA intermediate.
Class I (copy paste transposons):
Ty element (yeast), LINES (humans)
Class II (cut and paste transposons):
Ac/Ds (plants), Spm/dSpm (plants), Mariner-like (many species), P element (Drosophila)
In E. coli, Tn family of transposons often carry antibiotic resistance genes. They ...
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