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easyMCQNEET 20232026Biology
1 mark

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

  1. A
    Bright red colour
  2. B
    Bright blue colour
  3. C
    Bright yellow colour
  4. D
    Bright orange colour

Solution & Step-by-step Explanation

In agarose gel electrophoresis, DNA is invisible. When stained with Ethidium Bromide (EtBr) and viewed under Ultraviolet (UV) light, the DNA fragments appear as distinct bright orange bands.

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Upon exposure to UV radiation, DNA stained with ethidium bromide will show:
A
Bright red colour
B
Bright blue colour
C
Bright yellow colour
D
Bright orange colour

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biotechnologygel electrophoresis

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