BIO NMDCAT Structure of DNA
nmdcat.online July 3, 2026

36. The total number of nucleotide base pairs contained within a single complete longitudinal turn of B-form DNA is approximately

A. Five
B. Ten
C. Twenty
D. Thirty-four

📝 Explanation

The B-DNA helix has a pitch of 3.4 nm and a base-pair step of 0.34 nm, accommodating roughly 10 base pairs per full turn.

📖 Additional Information

  • Five
  • Ten
  • Twenty
  • Thirty-four

The B-DNA helix has a pitch of 3.4 nm and a base-pair step of 0.34 nm, accommodating roughly 10 base pairs per full turn.

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