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

Options

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

Answer

B

Explanation

The DNA fragments separte (resolve) according to their size through sieving effect provided by the agarose gel. Hence. The smaller the fragment size, the farther it moves.