Final answer:
Transposons, or transposable elements, are generated when they insert into DNA. They can move within a DNA molecule, from one DNA molecule to another, or even from one cell to another, which can introduce genetic diversity.
Step-by-step explanation:
Transposable elements, also known as transposons or 'jumping genes,' are generated when they insert into DNA. These genetic elements contain special inverted repeat sequences at their ends and a gene encoding the enzyme transposase. Transposons can move within a DNA molecule, from one DNA molecule to another, or even from one cell to another, which can introduce genetic diversity.