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NEET2017ZoologyBiotechnology - Principles and ProcessesActual

What is the following is correct for the movement of DNA fragments on agarose gel during gel electrophoresis?

Options

  1. AThe larger the fragment size, the farther it moves
  2. BThe smaller the fragment size, the farther it moves
  3. CPositively charged fragments move to farther end
  4. DNegatively charged fragments do not move

Correct answer

B. The smaller the fragment size, the farther it moves

Step-by-step solution

Gel electrophoresis is used for the separation of molecules of similar electric charges on the basis of their size. Hence, smaller the DNA fragment size the farther it moves.

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