Question
Draw the Watson-Krick model of double helix DNA.
✓
Answer
Structure: DNA is composed of two polynucleotide chains, where the backbone is constituted by sugar-phosphate.
Base Pairing: Adenine (A) pairs with Thymine (T) via two hydrogen bonds, and Guanine (G) pairs with Cytosine (C) via three hydrogen bonds.
Coiling: The two chains are coiled in a Right-handed fashion.
Dimensions: The pitch of the helix is 3.4 nm and there are roughly 10 base pairs (bp) in each turn. The distance between two base pairs is 0.34 nm.
Base Pairing: Adenine (A) pairs with Thymine (T) via two hydrogen bonds, and Guanine (G) pairs with Cytosine (C) via three hydrogen bonds.
Coiling: The two chains are coiled in a Right-handed fashion.
Dimensions: The pitch of the helix is 3.4 nm and there are roughly 10 base pairs (bp) in each turn. The distance between two base pairs is 0.34 nm.
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