DNA Structure: Double Helix Model — NEET Biology
🔥 Predicted for NEET 2027📖 NCERT Source
It is made of two polynucleotide chains, where the backbone is constituted by sugar-phosphate, and the bases project inside.
Why This May Be Tested in NEET 2027
Adjacent to a frequently-asked paragraph in the same chapter.
Practice This Concept
QuestionPredicted for NEET 2027
The sugar in DNA is:
📖 Solution & NCERT Explanation
View solution & NCERT explanation
Correct answer: B — Deoxyribose
DNA contains deoxyribose, missing one oxygen atom compared to ribose.
❓ Frequently Asked Questions
What does NCERT say about It made two polynucleotide?
It is made of two polynucleotide chains, where the backbone is constituted by sugar-phosphate, and the bases project inside.
Has this concept appeared in NEET?
High probability for NEET 2027. Adjacent to a frequently-asked paragraph in the same chapter.
Which chapter is this from?
Molecular Basis of Inheritance, Class 12 NCERT Biology.
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176/180of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank
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