Gel Electrophoresis is a technique used to separate macromolecules fragments like DNA and protein by their size. Also, the proteins can be separated according to their size and their charge of different proteins with the different charges. Therefore, the material being separated and is placed into a gel-like substance called agarose gel. Because each DNAmolecule is negatively charged, it can be pulled through the gel by an electric field. Small DNA molecules move more quickly through the gel than larger DNA molecules. (Biotechnology) For example, the DNA are separated to get a DNA fingerprint for forensic purposes, to get a DNA fingerprint for paternity testing, to check a PCR reaction, and to get a DNA fingerprint so that you can look for
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