試題詳解

36. Which one of modifications is likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis?
(A) Altering the charges of the DNA fragment.
(B) Increasing or decreasing the length of the DNA fragment.
(C) Increasing the concentration of a gel.
(D) Methylating the cytosine base within the DNA fragment.
(E) All of the above.