DNA Anti-parallel Polarity & 5'→3' Direction — NEET Biology
🔥 Predicted for NEET 2027📖 NCERT Source
The two chains have anti-parallel polarity. It means, if one chain has the polarity 5'→3', the other has 3'→5'.
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
What feature of the DNA strands’ polarity is crucial for the structure of the double helix?
📖 Solution & NCERT Explanation
View solution & NCERT explanation
Correct answer: C — Both strands are antiparallel, one 5'→3' and the other 3'→5'
The antiparallel nature allows complementary base pairing and helix formation.
❓ Frequently Asked Questions
What does NCERT say about two chains have anti-parallel?
The two chains have anti-parallel polarity. It means, if one chain has the polarity 5'→3', the other has 3'→5'.
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.
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank
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