Which part of the nucleotide is responsible for the formation of bonds in DNA double helix?(a) Base(b) Sugar(c) Phosphate group(d) Hydroxyl group of sugarThis question was addressed to me in an interview for internship.This interesting question is from Biomolecules in portion Biomolecules of Chemistry – Class 12

Which part of the nucleotide is responsible for the formation of bonds

1.	Which part of the nucleotide is responsible for the formation of bonds in DNA double helix?(a) Base(b) Sugar(c) Phosphate group(d) Hydroxyl group of sugarThis question was addressed to me in an interview for internship.This interesting question is from Biomolecules in portion Biomolecules of Chemistry – Class 12
Answer» RIGHT answer is (a) Base To explain: In a DNA strand, the bases protrude outward whereas the sugar and phosphate lie in a straight chain. The bases PAIR up in specific pair through hydrogen bonds to form a double helix. ADENINE forms two hydrogen bonds with thymine, whereas CYTOSINE forms three hydrogen bonds with guanine.

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