Electrophoresis is a process in which macromolecules are separated by utilizing their electrical charge and size. A technique for separating protein molecules of varying sizes in a mixture by moving them through a block of gel, as of agarose or polyacrylamide, by means of an electric field, with smaller molecules moving faster and therefore farther than larger ones.
Gel electrophoresis of DNA is used in DNA profiling. When DNA is found at a crime scene, it's sent to a investigation lab. The DNA is extracted from cells and run through gel electrophoresis. Samples of DNA are also taken from suspects and run through the same process. When pieces of DNA line up, investigators know they have a match and