How can gel electrophoresis be used by scientists?
By applying an electric current to a gel matrix, scientists are able to separate deoxyribonucleic acid (DNA), ribonucleic acid (RNA) or protein molecules. Once these are separated, a photo is taken of the gel, providing a picture of the separated molecular parts. In the world of forensics, gel electrophoresis is used to obtain a DNA fingerprint of a criminal.
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