What is agarose gel electrophoresis?

Agarose gel electrophoresis is a method of gel electrophoresis used in biochemistry, molecular biology, genetics, and clinical chemistry to separate a mixed population of macromolecules, such as DNA or proteins, in a matrix of agarose. The molecules are separated by size, with smaller molecules migrating faster through the gel than larger ones. It is commonly used to visualize DNA fragments, analyze PCR products, and size DNA molecules.