Assertion :In gel electrophoresis ,DNA fragments are separated . Reason : DNA is positively charged ,so it moves towards anode under electric field .

Both A and R are true and R is the correct explanation of A. Both A and R are true and R is not the correct explanation of A. Both A and R are false . A is true , but R is false .

A is true , but R is false .

DNA fragments can be isolated with the help of gel electrophoresis. In which negatively charged , DNA moves towards anode under an electric field through a matrix .