Q. In DNA, when AGCT occur, their association is as per which of the following pair ?

 1990  233 VMMC MedicalVMMC Medical 2004 Report Error

Solution:

In DNA molecule, adenine always pairs with thymine and guanine pairs with cytosine. So their association will be AT-GC i.e. adenine is complementary to thymine and guanine is complementary to cytosine.