Question:
Characteristic features of the structure of double-stranded DNA.
Characteristic features of the structure of double-stranded DNA.
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DNA = Double helix, antiparallel strands, A-T and G-C base pairing.
Updated On: Mar 7, 2025
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Solution and Explanation
Key Features of the DNA Double Helix:
- Double Helix Structure: Two strands of nucleotides run in opposite directions (antiparallel).
- Sugar-Phosphate Backbone: Provides structural support and is composed of deoxyribose sugar and phosphate groups.
- Base Pairing: Adenine (A) pairs with Thymine (T), and Guanine (G) pairs with Cytosine (C) via hydrogen bonds.
- Helical Structure: The two strands coil around an axis with a right-handed twist.
- Uniform Diameter: The structure has a constant diameter of 2 nm due to base-pair complementarity.
Diagram:
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