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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