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* השאלה נוספה בתאריך: 07-02-2020

		a cis-acting DNA sequence which binds the operator.
		the DNA sequence which binds the repressor.
		the DNA sequence where transcription of the operon begins.
		a protein which regulates transcription from the promotor.
		a protein which binds to the RNA polymerase.

In the context of prokaryotic gene regulation, a repressor is: