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What method did we use in lab to visualize the DNA fragments?

What method did we use in lab to visualize the DNA fragments?

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The method we use in lab to visualize the DNA fragments is gel electrophoresis. In this method, it separate the DNA fragments according to the fragment size. The DNA fragments are negatively charged due to the presence of phosphate group and when we allow current to pass through the gel, the DNA fragments will move to the positive side of the tank. During electrophoresis, more smaller fragments will move faster and can be seen near the positive side of the electrophoresis tank while larger DNA fragments are seen near the negative side of the electrophoresis tank due to its difference in fragment size.

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