In DNA helix, cytosine is paired with guanine by

In DNA, cytosine pairs with

(A) In double helical structure of DNA, cytosine pairs with guanine with three hydrogen bonds. (R) Cytosine contains one primary amine group, one secondary amine group and one keto group.

(A) Thymine pairs with adenine whereas cytosine pairs with guanine in DNA molecule. (R) The hydrogen bonding between bases of two strands is highly specific.

State whether the following statements are true or false. Correct the false statement: In DNA, Adenine always pairs with thymine and cytosine always pairs with guanine.

Why does cytosine make pair with guanine and not with adenine ?

Assertion : The two strands in DNA are complementary. Reason : Cytosine always pasirs with guanine and thymine with adenine.

Assertion:In a DNA molecules the total quantity of purines equals the total quantity of pyrimidines Reason : Adenine pairs with thymine and cytosine pairs with guanine

Assertion:In a DNA molecules the total quantity of purines equals the total quantity of pyrimidines Reason : Adenine pairs with thymine and cytosine pairs with guanine