Which of the following best explains the movement of DNA during gel electrophoresis? A. Since restriction enzymes cut DNA into differently sized pieces, polymerase is able to move the fragments through the gel.
B. Since polymerase enzymes cut DNA into differently sized pieces, restriction enzymes are able to move the fragments through the gel.
C. Since DNA is positively charged it attracts toward the negative end of the gel plate.
D. Since DNA is negatively charged it attracts toward the positive end of the gel plate.