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Match the following genes of the Lac operon with their respective products: (A) i gene (i) β-galactosidase (B) z gene (ii) Permease (C) a gene (iii) Repressor (D) y gene (iv) Transacetylase Select the correct option.

1. (a) (i) (iii) (ii) (iv)
2. (b) (ii) (i) (iv) (iii)
3. (c) (iii) (i) (iv) (ii)
4. (d) (iii) (iv) (i) (ii)

Correct answer: (c) (iii) (i) (iv) (ii)

Solution

In the lac operon, the i gene encodes the repressor, z encodes β-galactosidase, a encodes transacetylase, and y encodes permease. Matching these gives (A)-(iii), (B)-(i), (C)-(iv), (D)-(ii), which is option (c).

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