The pitch of the double-stranded B-DNA helix is

  1. a) 34 A
  2. b) 3.4 A
  3. c) 3.4 nm
  4. d) Both A and C

Answer: d) Both A and C

Explanation: The B-DNA is the most common conformation of DNA. The pitch of the B-DNA strand is 34 Angstrom. 34 Angstrom is equal to 3.4 nm.

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