DNA Structure and Modelling | GAT-B 2026 Top 50 Topics | Manas Kundu Sir

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Welcome to Chandu Biology Classes 🌿✨

In this session of GAT-B 2026 Top 50 Topics Series, we are covering one of the most fundamental and high-weightage topics in Molecular Biology:

🔥 DNA Structure and Modelling

DNA (Deoxyribonucleic Acid) is the genetic material of living organisms, and understanding its structure is essential for scoring well in GAT-B 2026.

📌 What You Will Learn in This Lecture

✅ Chemical composition of DNA (nucleotides)
✅ Structure of Polynucleotide chain
✅ Watson and Crick Double Helix Model
✅ Chargaff’s Rule & Base Pairing
✅ Major and Minor Grooves of DNA
✅ Different DNA Forms: A-DNA, B-DNA, Z-DNA
✅ DNA Supercoiling and Packaging Basics
✅ Exam-oriented concepts + Important MCQ points

This lecture is designed to strengthen your core concepts and boost your confidence for the GAT-B exam.

🌟 About Chandu Biology Classes

Chandu Biology Classes is a dedicated platform for competitive biology and biotechnology exams, offering:

📚 Concept-based deep teaching
🎯 GAT-B Top Topic Coverage
🧠 PYQs + MCQ Practice Sessions
🚀 Smart Revision Strategies
🏆 Complete Molecular Biology Guidance

Subscribe to stay updated with the full Top 50 Topics Series.

👨‍🏫 About Lecturer – Manas Kundu Sir

This session is delivered by Manas Kundu Sir, a highly skilled educator known for simplifying complex molecular biology topics.

✨ Clear conceptual explanation
✨ Focus on exam-relevant content
✨ Strong emphasis on PYQs & MCQs
✨ Perfect guidance for GAT-B aspirants

His teaching helps students master difficult topics like DNA modelling with ease.

📌 Watch till the end and don’t forget to Like, Share & Subscribe to Chandu Biology Classes for more GAT-B 2026 lectures.

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