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NEET BIOLOGYMedium

Match List I with List II regarding the lac operon genes and their products:

List I (Genes) List II (Products) A. Gene 'a' I. Beta-galactosidase B. Gene 'y' II. Transacetylase C. Gene 'i' III. Permease D. Gene 'z' IV. Repressor protein

A

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

B

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

C

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

D

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

Step-by-Step Solution

According to the NCERT text on the lac operon:

  1. The a gene encodes a transacetylase (Matches II).
  2. The y gene codes for permease, which increases cell permeability to beta-galactosides (Matches III).
  3. The i gene codes for the repressor of the lac operon (Matches IV).
  4. The z gene codes for beta-galactosidase (Matches I).
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