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NEETZoologyMolecular Basis of Inheritance

Scientist Contribution A. James Watson 1. Discovered DNA as an acidic substance in the nucleus, named it 'Nuclein' B. Friedrich Miescher 2. Co-proposed the Double Helix model of DNA structure C. Rosalind Franklin 3. Provided X-ray diffraction data crucial for the DNA model D. Erwin Chargaff 4. Found that the ratio of Adenine to Thymine and Guanine to Cytosine in double-stranded DNA is constant and equals one

Options

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

Correct answer

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

Step-by-step solution

A - 2: James Watson, along with Francis Crick, proposed the Double Helix model of DNA. B - 1: Friedrich Miescher discovered DNA as an acidic substance and named it 'Nuclein.' C - 3: Rosalind Franklin's X-ray diffraction data provided crucial insights into the DNA structure. D - 4: Erwin Chargaff discovered the base pairing rules, observing that the ratio of Adenine to Thymine and Guanine to Cytosine in double-stranded DNA is constant and equals one.

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