During Investigation of the Lac Operon, Jacob and Monod Found

question 6

Multiple Choice

During investigation of the lac operon, Jacob and Monod found that mutations in the same gene did not always lead to the same phenotypic outcome. For example, some mutations in the lacI gene led to constitutive lactose breakdown, whereas other mutations led to an inability to ferment lactose under any conditions. Which of the following statements are true about lacI^s mutations? Please select all that apply.

• A) lacI^s mutants produce a lac repressor protein that cannot bind to DNA
• B) lacI^s mutants cannot be complemented in trans
• C) The operator binding sequence is changed in lacI^s mutants
• D) lacI^s mutants are unable to utilize lactose
• E) Introduction of a functional operon on a plasmid rescues the lacI^s phenotype

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Definitions:

Colonial Government

The administrative and governing structure established in a colony by a foreign power, often characterized by exploitation and control.

Deists

People who believe in deism, the philosophical position that posits the existence of a God based on reason and natural law, without intervention in the universe or revelation to humanity.

Natural Order

The concept or belief in a pre-ordained arrangement and hierarchy within the universe, including social positions and roles, often viewed as natural or divinely structured.