Kernel

Transposition

Mottled kernel

Some transposons move via an RNA intermediate and rely on reverse transcriptase.

Caenorhabditis, and the mariner transposon of Drosophila. Members of this family are found in fungi, plants, animals (including humans) and protozoans. They range from roughly 1300 to 2500 bp in length, contain a single transposase gene and are flanked by inverted repeats. They operate by the conservative cut and paste mechanism. The breaks they leave behind are often mended by the eukaryotic double-stranded break repair systems (see Ch. 14).

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