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Question

B-DNA which is right-handed double helix contains ______ base pairs per turn of the helix and each turn is _______ long.

  1. 10, 3.4 ˚A
  2. 10, 34 ˚A
  3. 11, 20 ˚A
  4. 11, 34 ˚A

A
11, 34 ˚A
B
11, 20 ˚A
C
10, 3.4 ˚A
D
10, 34 ˚A
Solution
Verified by Toppr

B-DNA is the most commonly found form of DNA in nature. This form of DNA is very narrow and elongated.
B-DNA contains 10 base pairs per turn and each turn is about 34 Å long.
So, the correct answer is '10, 34 Å'

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