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CLASS 12 BIOLOGY
👆 TOUCH TO ROTATE • 🤏 PINCH TO ZOOM
DNA STRUCTURE
Deoxyribonucleic acid (DNA) is a molecule composed of two polynucleotide chains that coil around each other to form a double helix.
- 🧬 Double Helix: Twisted ladder structure.
- 🔗 Base Pairs: A-T and G-C connections.
- 🧪 Nucleotides: Sugar + Phosphate backbone.
🧠 QUICK CHECK
Adenine (A) always pairs with?
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