Question

as dna moves through the agarose gel, which pole of the gel apparatus will it move towards?
○ a. the negative pole.
○ b. it is not possible to answer this as it depends on the sequence of the dna fragments.
○ c. the positive pole.

Explanation:

DNA has a negative charge due to the phosphate groups in its backbone. In gel electrophoresis, opposite charges attract. So, negatively - charged DNA will move towards the positive pole.

Answer:

C. The positive pole.