Upon exposure to UV radiation, DNA stained with ethidium bromide … - Vidyadip

MCQ

Upon exposure to UV radiation, DNA stained with ethidium bromide will show

✓
Bright orange colour
B
Bright red colour
C
Bright blue colour
D
Bright yellow colour

✓

Answer

Correct option: A.

Bright orange colour

a
Option $(1)$ is the correct answer because in recombinant $DNA$ technology the separated $DNA$ fragments can be visualised only after staining the $DNA$ with a substance known as ethidium bromide followed by exposure to $U.V.$ radiation. You can see bright orange coloured bands of $DNA$ in an ethidium bromide stained gel exposed to $U.V.$ light.

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