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NEET BIOLOGYMedium

Match List-I with List-II relating to the genes of the lac operon and their gene products:

List-I (a) i gene (b) z gene (c) a gene (d) y gene

List-II (i) Beta-galactosidase (ii) Permease (iii) Repressor (iv) Transacetylase

A

(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

B

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

C

(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)

D

(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

Step-by-Step Solution

According to the text describing the lac operon:

  • The i gene codes for the Repressor of the lac operon (a-iii).
  • The z gene codes for Beta-galactosidase (b-i).
  • The a gene encodes Transacetylase (c-iv).
  • The y gene codes for Permease (d-ii). Thus, the correct matching sequence is (iii), (i), (iv), (ii).
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