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.

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

In DNA helix, cytosine is paired with guanine by

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.

(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.

Choose the correct alternative. Cytosine always pairs with ._______

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