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Question: Answered & Verified by Expert
In agarose gel electrophoresis,
BiologyBiotechnology - Principles and ProcessesNEET
Options:
  • A DNA migrates towards the negative electrode
  • B Supercoiled plasmids migrate slower than their nicked counterpart
  • C Larger molecules migrate faster than smaller molecules
  • D Ethidium bromide can be used to visualize the DNA
Solution:
1694 Upvotes Verified Answer
The correct answer is: Ethidium bromide can be used to visualize the DNA
Ethidium bromide is an intercalating agent commonly used as a fluorescent tag (nucleic acid stain) in molecular biology laboratories for techniques such as agarose gel electrophoresis. It is commonly abbreviated as EtBr, which is also an abbreviation for bromoethane. Ethidium bromide is a DNA interchelator, inserting itself into the spaces between the base pairs of the double helix

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