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Modern Genetic Analysis
13. Transposable Genetic Elements
Key Concepts
A series of genetic elements can occasionally move, or transpose, from one position on the chromosome to another position on the same chromosome or on a different chromosome.
In bacteria, insertion sequences, transposons, and phage mu are examples of transposable genetic elements.
Transposable elements can mediate chromosomal rearrangements.
In higher cells, transposable elements have been extensively characterized in yeast, Drosophila,and maize and in mammalian systems.
In eukaryotes, some transposable elements utilize an RNA intermediate during transposition, whereas, in prokaryotes, transposition is exclusively at the DNA level.

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