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Biology Medium FPSC PPSC NTS Uploaded: 14 Jul 2026

Who discovered the double helix structure of DNA?

  • A Charles Darwin and Gregor Mendel
  • B Robert Hooke and Anton van Leeuwenhoek
  • C James Watson and Francis Crick
  • D Louis Pasteur and Robert Koch
Correct Answer: Option C — James Watson and Francis Crick
Explanation:
James Watson and Francis Crick discovered the double helix structure of DNA in 1953 using X-ray diffraction data from Rosalind Franklin and Maurice Wilkins.
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