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JIPMER 2012
Exam
JIPMER
Year
2012
Subject
Zoology
Chapter
Molecular Basis of Inheritance

JIPMER 2012 · Zoology · Molecular Basis of Inheritance

Width of the DNA molecule is

Width of the DNA molecule is

Options

  1. A15A˚15 Å
  2. B20A˚20 Å
  3. C25A˚25 Å
  4. D34A˚34 Å

Correct answer

B. 20A˚20 Å

Step-by-step solution

The 3-D structure of DNA is represented by a double helix, in which each turn has a diameter of 34A˚34 Å and contains 10 base pairs at a distance of 3.4A˚3.4 Å. The width of DNA molecule is 20A˚20 Å.
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