DNA Structure · Botany

One full turn of the B-DNA helix contains approximately how many base pairs?

  1. 10
  2. 5
  3. 12
  4. 20
Show answer and explanation

Correct answer: 10

In the B-form of DNA, there are roughly 10 base pairs per complete turn of the helix. The pitch (height) of one full turn is 3.4 nm.

Difficulty: Medium Question 11 of 20

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