A) Ethidium bromide stained DNA can be seen in light
B) DNA cannot be seen in visible light
C) Ethidium bromide stained DNA can be seen when exposed to UV-light
D) DNA cannot be seen in visible light even if stained
Correct Answer: A
Solution :
Ethidium bromide stained DNA can be seen only if exposed to UV radiation. It is used to detect the presence of nucleic acids in agarose gel during agarose gel electrophoresis.
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