BotanyMatch the List I with List II with respect to lac operon List – I List – II A) Product of gene y i) Repressor B) Product of gene z ii) Transporter protein C) Product of gene i iii) Hydrolase D) Product of gene a iv) Transferase

Match the List I with List II with respect to lac operon 

 List – I List – II
A)Product of gene yi)Repressor
B)Product of gene zii)Transporter protein
C)Product of gene iiii)Hydrolase
D)Product of gene aiv)Transferase

  1. A
    A - ii, B - iii, C - i, D - iv
  2. B
    A - iii, B - ii, C - i, D - iv
  3. C
    A - ii, B - iii, C - iv, D - i
  4. D
    A - ii, B - i, C - iii, D - iv

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    Solution:

    In lac operon, gene y is expressed to form transporter protein known as permease (symporter) that actively transports lactose into a cell. Gene z is expressed to form a hydrolase known as β-galactosidase, gene a is expressed to form a transferase known as transacetylase. Gene i has information for the formation of repressor protein of lac operon that can bind to operator to prevent the transcription of structural genes of lac operon.

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