A Mutation That Inactivates the Regulatory Gene of a Repressible

question 63

Multiple Choice

A mutation that inactivates the regulatory gene of a repressible operon in an E. coli cell would result in

• A)continuous transcription of the gene controlled by that regulator.
• B)complete inhibition of transcription of the gene controlled by that regulator.
• C)irreversible binding of the repressor to the operator.
• D)inactivation of RNA polymerase by alteration of its active site.
• E)continuous translation of the mRNA because of alteration of its structure.

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Definitions:

Incubation

Incubation is the process of maintaining controlled environmental conditions to facilitate the development of embryos or the growth of microorganisms.

Unconsciously

Operating or existing outside of conscious awareness or perception.

Spreading Activation

A model in cognitive psychology that explains how information is retrieved in the brain, suggesting that thoughts and ideas spread across networks of neurons.

Domain Knowledge

In-depth understanding or expertise in a specific area or subject.