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The distance ...

Question

The distance between two DNA strands is

A

20

˚ A

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B

34

˚ A

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C

3.4

˚ A

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D

2

˚ A

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Solution

The correct option is A 20 $˚ A$
According to the Watson Crick double helical model of DNA, the diameter of DNA molecule is 20 angstrom. Hence, the distance between two DNA strand is 20 angstroms.
So, the correct answer is option A.

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