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Which of the given statements is correct in the context of visualizing DNA molecules separated by agarose gel electrophoresis?
a. DNA can be seen in visible light
b. DNA can be seen without staining in visible light
c. Ethidium bromide-stained DNA can be seen in visible light
d. Ethidium bromide-stained DNA can be seen under exposure to UV light
Answers (1)
The answer is the option (d) Ethidium bromide stained DNA can be seen under exposure to UV light
Explanation: DNA cannot be seen in visible light, so options a and b are incorrect. Staining by ethidium bromide and presence of UV light are necessary to see DNA.
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