If there are 10,000 base pairs in DNA, then its length

340 nm

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3400 nm

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34000 nm

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340000 nm

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Solution

The correct option is B 3400 nm
According to the most widely accepted model of DNA structure, the distance between any two base pairs in DNA is approximately 3.4 angstroms. Thus for a DNA molecule having 10,000 base pairs; the length will be 10,000 x 3.4 or 34000 angstroms or 3400 nanometers.
So, the correct answer is option B.

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