Question

Since DNA fragments are negatively charged molecules, they can be separated by forcing them to move towards the Anode under electric field through a medium in Gel Electrophoresis. The separated DNA fragments can be visualized only after staining in Ethidium bromide followed by exposure to UV radiation. Which of the following is most appropriate?

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

EtBr intercalates into DNA double helix and fluoresces orange under UV --- used to visualise DNA bands after electrophoresis.

Answer 1

The Correct Option is B