what is a transposon?

A transposon is a segment of DNA that can move from one position to another within the genome of a cell or organism. It is also called a jumping gene or a mobile genetic element. Transposons often carry additional genetic information, such as antibiotic resistance genes, and can cause mutations or chromosomal rearrangements in the host genome. They are found in both prokaryotic and eukaryotic organisms. Transposons have played an important role in evolution by promoting genetic diversity and driving the evolution of new genes and regulatory regions.