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Topic: Gene regulation: lac operon· Genetics and Evolution

Match List I with List II.List I: A. Gene 'a'; B. Gene 'y'; C. Gene 'i'; D. Gene 'z'List II: I. β-galactosidase; II. Transacetylase; III. Permease; IV. Repressor proteinChoose the correct answer from the options given below:

1. A-III, B-I, C-IV, D-II

2. A-II, B-I, C-IV, D-III

3. A-II, B-III, C-IV, D-I

4. A-III, B-IV, C-I, D-II

1 answer

Best answer

Answer: 3. A-II, B-III, C-IV, D-I

Key idea: In the lac operon, each gene codes for a specific protein.

  • Gene i codes for the repressor protein (C-IV).
  • Gene z codes for \(\beta\)-galactosidase (D-I).
  • Gene y codes for permease (B-III).
  • Gene a codes for transacetylase (A-II).

So A-II, B-III, C-IV, D-I, which is option 3.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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