Define the following terms: Regulator gene and Promoter gene.
(N/A) $(1)$ Regulator gene: It controls the activity of the operator gene by producing repressor molecules.
$(2)$ Promoter gene: It is an initiation point for transcription and serves as the binding site for $RNA$ polymerase.
$(2)$ Promoter gene: It is an initiation point for transcription and serves as the binding site for $RNA$ polymerase.
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How many operons are present in the $nif$ gene cluster of $Klebsiella$ $pneumoniae$?
Medium
View SolutionGiven below are two statements:
Statement $I$: In lac operon,the repressor protein binds to the promoter region of the operon and prevents $\text{RNA}$ polymerase from transcribing the operon.
Statement $II$: Regulation of lac operon can also be visualized as regulation of enzyme synthesis by its substrate.
In the light of the above statements,choose the correct answer from the options given below:
Statement $I$: In lac operon,the repressor protein binds to the promoter region of the operon and prevents $\text{RNA}$ polymerase from transcribing the operon.
Statement $II$: Regulation of lac operon can also be visualized as regulation of enzyme synthesis by its substrate.
In the light of the above statements,choose the correct answer from the options given below:
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View SolutionIn the $lac$ operon concept of gene expression,allolactose acts as:
In the term $lac$ operon,what does the term $lac$ refer to?
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View SolutionWhich of the following is not a structural gene of the $Lac$ operon?
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