Question

Length of one turn of the helix in a B-form DNA is approximately

• A. 3.4 nm
• B. 2 nm
• C. 0.34 nm
• D. 20 nm

Answer 1

Answer: (A)

Length of one turn of DNA helix is $34\mathring{A}.1\mathring{A}$ = $10^{-}1$ nm