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Molecular Basis of Inheritance question

2022 · Q47
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Molecular Basis of Inheritance question

2022 · Q47

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1

If the length of a DNA molecule is 1.1 metres, what will b the approximate number of base pairs?

  1. A
    3.3 ×\times× bp 109
  2. B
    6.6 ×\times× bp 109
  3. C
    3.3 ×\times× bp 106
  4. D
    6.6 ×\times× bp 106
View written solutionFree

Correct answer: A

Number of base pairs $\times$ distance between 2 consecutive base pairs = Length of DNA molecule

x . 0.34 $\times$ 10$-$9 m = 1.1 m

x = $${{1.1} \over {0.3 \times {{10}^{ - 9}}}}$$

= 3.6 $\times$ 109

$\simeq$ 3.3 $\times$ 109 bp

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