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in Molecular Basis of Inheritance by (340 points)
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In the function of lac operon in e coli the lac genes z,y,a are transcribed in the presence of lactose because

closed with the note: I have answered it myself correctly
by (340 points)
Correct Option is (3)

1 Answer

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by (5.0k points)

The correct answer is an (RNA polymerases binds to the operator)

  • The lac repressor protein binds to the operator and blocks RNA polymerase from binding to the promoter and transcribing the operon. 
  • The promoter is the binding site for RNA polymerase, the enzyme that performs transcription. 
  • The operator is a negative regulatory site bound by the lac repressor protein.

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