In agarose gel electrophoresis, the separated DNA fragments can be visualised after staining the DNA with EtBr under:

Gamma rays

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Ultraviolet radiation

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X-rays

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Infrared light

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Solution

The correct option is B Ultraviolet radiation

The separated DNA fragments can be visualised only after staining the DNA with EtBr under UV radiation.

Absorption range for UV rays is between 210-280 nm.

Ethidium bromide is an intercalating agent that gets stacked in between nitrogenous bases.

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