Question

The hydrogen bonding for the bases pairs of DNA are between:

• A. amide carbonyl and $-{NH}_2$ only
• B. amide $N-H$ and cyclic amine nitrogen only
• C. alcohols and carbonyls only
• D. both (a) and (b)

Answer 1

The correct option is D both (a) and (b)

DNA base pairs are held together with the Hydrogen Bonds. Adenine and Thymine are having 2 bonds that hold them together while Cysteine and Guanine have 3 bonds that hold them together. The hydrogen bonds generally occur between a Nitrogen and carbonyl oxygen.

The correct option is D.