2022 Phase 2 Molecular Basis of InheritanceLac operon genes Easy Question 50 of 200 in Molecular Basis of Inheritance

Match List - I with List - II. Choose the correct answer.

Column I

  • A. In lac operon i gene codes for
  • B. In lac operon z gene codes for
  • C. In lac operon y gene codes for
  • D. In lac operon a gene codes for

Column II

  • I. transacetylase
  • II. permease
  • III. $\beta$-galactosidase
  • IV. Repressor

Correct answer: A → IV, B → III, C → II, D → I

Solution

In the lac operon, the regulator i gene codes for the repressor protein; the structural genes z, y and a code for $\beta$-galactosidase, permease and transacetylase respectively.

Concept Lac operon genes

Molecular Basis of Inheritance in past papers

200 questions from this chapter have appeared across 27 exam years.