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Cellular and Molecular Biology

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Operons Under Negative Repressible Control Systems

CELLS-QTJVYZ

The expression of a bacterial operon is under the control of a negative repressible control system.

What would be the likely effect of a mutation that results in the repressor protein being unable to bind to the operator?

A

The operon would always be expressed.

B

The operon will never be expressed.

C

The operon will be expressed only in the presence of the corepressor.

D

The operon will be expressed only in the absence of the corepressor.