What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis ?

Options

A. The larger the fragment size, farther it moves
B. The smaller the fragment size, farther it moves
C. Positively charged fragment move to farther end.
D. Negatively charged fragment do not move.

Answer

B

Explanation

In agarose gel electrophoresis of DNA molecule smaller molecules travel faster then larger molecules. The movement of DNA fragment is inversely proportional to number of base pairs. Separation of DNA occurs by its Il length.