In DNA molecule, the sugar moiety is
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → β-D-2-deoxyribose.
Nucleic acids are polymers of nucleotides. Each nucleotide has three parts: a pentose sugar, a nitrogenous base and a phosphate group. In DNA the sugar is 2-deoxyribose, which has H instead of OH at carbon 2.
The sugar is in the D series (like all natural sugars) and the base is attached at C1′ in the β configuration. So the sugar moiety of DNA is β-D-2-deoxyribose.
NCERT (2026-27 edition):
Chemical Composition of Nucleic Acids
