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NEETZoologyMolecular Basis of Inheritance

Match List-I with List-II regarding the historical timeline of DNA discovery. List-I (Scientists) List-II (Contributions) (A) F. Griffith (I) Unequivocal proof using bacteriophages (B) Avery, MacLeod and McCarty (II) X-ray diffraction data of DNA (C) Hershey and Chase (III) Transforming principle in Streptococcus (D) Wilkins and Franklin (IV) Biochemical characterisation of transforming principle Choose the correct a

Options

  1. A(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
  2. B(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
  3. C(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
  4. D(A)-(III), (B)-(IV), (C)-(II), (D)-(I)

Correct answer

B. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Step-by-step solution

(A) Frederick Griffith (1928) conducted experiments with Streptococcus pneumoniae and discovered the 'transforming principle'. (B) Oswald Avery, Colin MacLeod, and Maclyn McCarty (1933-44) worked to determine the biochemical nature of Griffith's transforming principle, proving it was DNA. (C) Alfred Hershey and Martha Chase (1952) worked with viruses that infect bacteria (bacteriophages) and provided the unequivocal proof that DNA is the genetic material. (D) Maurice Wilkins and Rosalind Franklin produced the X-ray

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