A microsatellite is a type of repetitive DNA sequence found in the genomes of many organisms. These sequences consist of short segments of DNA, typically 1 to 6 base pairs long, that are repeated multiple times. Microsatellites are highly variable among individuals, making them useful for genetic studies, population genetics, and forensic analysis. Due to their high mutation rates, microsatellites can provide insights into genetic diversity and evolutionary relationships. Researchers often use them in genetic mapping and marker-assisted selection in agriculture to identify desirable traits in crops and livestock.