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The DNA fragments separated on an agarose gel can be visualised after staining with:

Options

  1. ABromophenol blue
  2. BAcetocarmine
  3. CAniline blue
  4. DEthidium bromide

Correct answer

D. Ethidium bromide

Step-by-step solution

The DNA fragments separated on an agarose gel can be visualised after staining with ethidium bromide. It is an intercalating agent and a fluorescent agent. The stained DNA fragments are seen as bright orange-coloured bands under UV light. Intercalation is the insertion of molecules between the planar bases of DNA. This process is used as a method for analysing DNA.

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