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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance3 Marks
Question
Eukaryotic DNA is condensed and supercoiled.
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Answer

  1. In a typical mammalian cell, length of DNA double helix is approximately 2.2 metres.
  2. The size of typical nucleus is approximately 10-6 m
  3. Such a long DNA molecule has to be fitted in small nuclear space.
  4. Therefore, DNA is highly condensed, coiled and supercoiled so that it can be accommodated in the nucleus.

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