DNA Gel Electrophoresis is a laboratory technique used to separate DNA fragments based on their size. In this process, a gel made of agarose or polyacrylamide is prepared and submerged in a buffer solution. When an electric current is applied, the negatively charged DNA molecules move towards the positive electrode, with smaller fragments traveling faster than larger ones. After the separation, the gel is stained with a dye that binds to the DNA, allowing visualization under UV light. This technique is commonly used in various applications, including genetic research, forensic analysis, and molecular biology to analyze DNA samples.