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

56. The standard spatial angle of rotation between two consecutive, adjacent nucleotide base pairs in the B-DNA model is approximately

A. 3.6∘
B. 36∘
✓
C. 180∘
D. 360∘

📝 Explanation

A full 360∘ turn accommodates roughly 10 base pairs, meaning each step rotates the helix by an angle of approximately 36∘.

📖 Additional Information

  • 3.6∘
  • 36∘
  • 180∘
  • 360∘

A full 360∘ turn accommodates roughly 10 base pairs, meaning each step rotates the helix by an angle of approximately 36∘.

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