Questions: "Jumping genes", or , are migrating gene sequences that can lead to changes in genotype within a cell or between cells.

The answer is: transposons

Explanation:

• Transposons, often referred to as "jumping genes," are sequences of DNA that can move or "transpose" themselves to new positions within the genome of a single cell. This ability to move can lead to changes in the genotype, as they can insert themselves into different locations in the DNA, potentially disrupting or modifying the function of genes.
• Transposons are a type of mobile genetic element and are found in the genomes of many organisms, including bacteria, plants, and animals.
• Their movement can have various effects, such as causing mutations, altering gene expression, or contributing to genetic diversity.

In summary, transposons are the correct term for "jumping genes" that can migrate within or between cells, leading to changes in the genotype.