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NEET2016ZoologyMolecular Basis of InheritanceActual

In a 3.2 Kbp long piece of DNA, 820 adenine bases were found. What would be the number of cytosine bases?

Options

  1. A780
  2. B1560
  3. C740
  4. D1480

Correct answer

A. 780

Step-by-step solution

Total DNA =3.2 Kbp =3200 bp Adenine =820 According to Chargaff's rule [ A ]=[ T ],[ G ]=[ C ] So, Thymine =820 Therefore, total A + T content =820+820=1640 Also, A+T=3200-(G+C) So, G + C content =3200-1640=1560 So, cytosine = 1560 2 =780

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