If the length of DNA strand is 68A - then- what will be the number of nucleotides present in DNA molecule

The correct option is B 40The distance between consecutive nitrogenous bases is 3.4 A #176;.68 A #176; means the DNA strand has 68 #247; 3.4 = 20 base p ...

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Byju's Answer

Standard XII

Biology

Genetic Material

If the length...

Question

If the length of DNA strand is ${68 A}^{\circ}$ then, what will be the number of nucleotides present in DNA molecule

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Solution

The correct option is B 40
The distance between consecutive nitrogenous bases is 3.4 A°.
68 A° means the DNA strand has 68 ÷ 3.4 = 20 base pairs.
Each base pair has 2 bases, hence there are 40 bases.
As we know, 4 nucleotides form 2 base pairs then 40 nucleotides can form 20 base pairs.
So, the correct option is '40'

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If the length of DNA strand is 68A∘ then, what will be the number of nucleotides present in DNA molecule

If the length of DNA strand is ${68 A}^{\circ}$ then, what will be the number of nucleotides present in DNA molecule