alleryThe pitch of the DNA double helix is approximately:
A0.034 nm
B3.4 nm
C34 nm
D0.34 nm
Answer & Solution
Correct answer: B. 3.4 nm
**Pitch = 3.4 nm** (one full turn of the helix).
It contains ~10 base pairs, so the distance between consecutive base pairs is **0.34 nm = 3.4 Å**.
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