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Question

The separated DNA fragments by gel electrophoresis can be visualised only after staining the DNA with a compound known as

A
ethidium iodide
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B
ethidium chloride
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C
ethidium bromide
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D
propidium iodide
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Solution

The correct option is C ethidium bromide
The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide followed by exposure to UV radiation.
Bright orange coloured bands of DNA can be observed in an ethidium bromide stained gel exposed to UV light.

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