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NEETZoologyMolecular Basis of Inheritance

Parameter Value A. Pitch of the helix 1. 3.4 nm B. Hydrogen bonds in G-C pairing 2. 0.34 nm C. Number of base pairs per turn 3. 10 bp D. Distance between base pairs 4. 3 H-bonds

Options

  1. AA - 1, B - 4, C - 3, D - 2
  2. BA - 2, B - 1, C - 4, D - 3
  3. CA - 3, B - 4, C - 1, D - 2
  4. DA - 4, B - 3, C - 2, D - 1

Correct answer

A. A - 1, B - 4, C - 3, D - 2

Step-by-step solution

A - 1: The pitch of the helix is 3.4 nm. B - 4: Guanine pairs with Cytosine through 3 hydrogen bonds. C - 3: There are about 10 base pairs in each turn of the DNA helix. D - 2: The distance between adjacent base pairs is approximately 0.34 nm.

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