Correct Option
The correct matching of List-I with List-II is as follows:
- A. Theory of mutation is associated with 4. de Vries. Hugo de Vries proposed the mutation theory based on his observations of sudden, heritable changes in organisms, particularly in the evening primrose (Oenothera lamarckiana).
- B. Theory of evolution is associated with 3. Darwin. Charles Darwin formulated the theory of evolution by natural selection, explaining the gradual development of species.
- C. One gene one enzyme hypothesis is associated with 1. Beadle and Tatum. George Beadle and Edward Tatum demonstrated that specific genes control the synthesis of specific enzymes, primarily through experiments with the bread mold Neurospora crassa.
- D. Operon concept is associated with 2. Jacob and Monad. François Jacob and Jacques Monod proposed the operon model to explain the regulation of gene expression in prokaryotes.
Incorrect Options
- Option (a) is incorrect because it incorrectly matches A (Theory of mutation) with 3 (Darwin) and B (Theory of evolution) with 4 (de Vries). The correct associations are A-4 and B-3.
- Option (c) is incorrect because it incorrectly matches C (One gene one enzyme hypothesis) with 2 (Jacob and Monad) and D (Operon concept) with 1 (Beadle and Tatum). The correct associations are C-1 and D-2.
- Option (d) is incorrect because it incorrectly matches A (Theory of mutation) with 3 (Darwin) and B (Theory of evolution) with 4 (de Vries). This reverses the correct associations for these two theories.