In agarose gel electrophoresis, DNA molecules move toward the ____ pole because they ____.
A) positive; are negatively charged
B) negative; are positively charged
C) bottom; are pulled by a magnetic force
D) bottom; are pulled by gravity
E) bottom; have a greater density than the gel

Question

Quizplus · Accepted Answer

DNA molecules are negatively charged due to their phosphate backbone, and in agarose gel electrophoresis, they move toward the positive pole because opposite charges attract.

In Agarose Gel Electrophoresis, DNA Molecules Move Toward the ____