Electrophoresis is a laboratory technique used to separate DNA, RNA, and proteins based on their size, charge, and shape. It involves the application of an electric current to a gel matrix, which causes the molecules in the mixture to move towards the electrode with the opposite charge. This technique is commonly used in molecular biology, biochemistry, and genetics research for applications such as DNA sequencing, protein purification, and forensic analysis. However, performing electrophoresis requires specialized skills and knowledge, such as how to prepare the gel, apply samples, and interpret the results.