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Transposons, also known as "jumping genes," are DNA sequences that can move around in genomes.

So-called jumping genes use the same enzymes to move their genetic sequences within their genome, but it wasn’t clear what role the generated DNA strands play in the infected cells.

Further, most of these repeats consist of retrotransposons, also called "jumping genes" or "mobile elements," which can move around and insert themselves repeatedly and randomly in human code.

These duplicated resistance genes are often linked to "jumping genes" called transposons that can move from strain to strain.

The results also showed that "jumping genes" -- transposable elements -- played a major role in creating new genetic variation for selection to act upon.