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easyMCQNEET 20212026Biology
1 mark

DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as:

  1. A
    Dark red bands
  2. B
    Bright blue bands
  3. C
    Yellow bands
  4. D
    Bright orange bands

Solution & Step-by-step Explanation

In agarose gel electrophoresis, DNA cannot be seen without staining. After staining with Ethidium Bromide (EtBr) and exposure to Ultraviolet (UV) light, the DNA fragments appear as bright orange coloured bands.

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DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as:
A
Dark red bands
B
Bright blue bands
C
Yellow bands
D
Bright orange bands

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biotechnologyelectrophoresis

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