Which One of the Following Statements Regarding DNA Gel Electrophoresis

Multiple Choice

Which one of the following statements regarding DNA gel electrophoresis is true?

A) It is the charge of the pyrimidines in the DNA molecule that gives DNA its net negative charge and ability to migrate on a gel.
B) Agarose gel can resolve 1 bp differences in DNA fragments and is best to use for DNA sequencing.
C) Polyacrylamide gel can separate smaller fragments of DNA with high resolution and is best for single-stranded nucleic acid separation.
D) Because of the negative charge of DNA,it will migrate toward the negative electrode during electrophoresis.