alleryIf the pitch of the DNA helix is 3.4 nm and there are 10 base pairs per turn, the rise per base pair is:
A0.034 nm
B3.4 nm
C34 nm
D0.34 nm
Answer & Solution
Correct answer: D. 0.34 nm
Rise per bp = pitch / bp per turn = 3.4 nm / 10 = 0.34 nm.
The B-form helix is right-handed with a 20 angstrom (2 nm) diameter and 34 angstrom pitch.
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