What is a common method for visualizing DNA after gel electrophoresis?
Correct Answer: Ethidium bromide staining
- Step 1: After performing gel electrophoresis, the DNA is separated in the gel.
- Step 2: Ethidium bromide is added to the gel. This is a special dye that can attach to DNA.
- Step 3: The gel is then exposed to ultraviolet (UV) light.
- Step 4: When the UV light shines on the gel, the ethidium bromide that is attached to the DNA glows.
- Step 5: This glowing allows us to see the DNA bands clearly.
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