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Since DNA was first discovered, we have continued to find uses for it. One of the most profound uses is that of gel electrophoresis. What you're about to learn could keep you from going to jail, so keep reading. When the police or other authorities are working on a case and there is more than one suspect, gel electrophoresis is often what they turn to. After collecting the suspects' DNA samples they send them to the forensics lab where the magic happens. All the samples are placed on a porous gel in separate sections with the unknown DNA in order to compare them. When a current is applied, the molecules move from the negative electrode to the positive electrode. The size of the fragments determines how far they will move. When the process is over the fragments will appear as bands that are visible through staining them. By doing this, it is easy to see whose DNA matches up with the suspect's. This technology has helped keep a lot of people out of jail, and given families of lost loved ones peace.
Sources: Class Notes-Chapter 12:DNA Technology and Genomics
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