(A) Adenine alwaye bound with thymine and cytosine bound with guanine (✔)
(B) Adenine always bound with cytosine and thymine bound with guanine (X)
(C) Adenine always bound with guanine and cytosine bound with thymine (X)
(D) Adenine always bound with uracil and cytosine bound with guanine (X)
Answer : In a DNA molecule, the rule fore base pairing is Adenine always bound with thymine and cytosine bound with guanine.
