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KCET2026BiologyMolecular Basis of Inheritance

Who amongst the following scientist/s had no contribution in the development of the double-helix model for the structure of DNA?

Options

  1. AMaurice Wilkins
  2. BRosalind Franklin
  3. CMeselson and Stahl
  4. DErwin Chargaff

Correct answer

C. Meselson and Stahl

Step-by-step solution

The double-helix model of DNA was proposed by James Watson and Francis Crick in 1953. Maurice Wilkins and Rosalind Franklin produced the X-ray diffraction data that provided crucial evidence for the helical structure of DNA. Erwin Chargaff formulated Chargaff's rules, which stated that the amount of adenine equals thymine and the amount of guanine equals cytosine. This was essential for understanding base pairing in the double-helix model. Meselson and Stahl conducted experiments in 1958 to prove the semi-conservat

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