In the Absence of Its Inducer the Lac Operon Remains

question 49

Multiple Choice

In the absence of its inducer the lac operon remains repressed because of the binding of lac repressor to the _______.

• A) Promoter
• B) Regulatory gene
• C) Catabolic gene activator protein
• D) Operator
• E) CAP site

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Definitions:

Evolution

The mechanism by which diverse species of organisms are considered to have emerged and varied from their predecessors over the course of the Earth's history.

Genetic Drift

A mechanism of evolution that causes allele frequencies to change randomly over time due to chance events.

Mutation

A permanent alteration in the DNA sequence that makes up a gene, leading to variability within populations and potentially to new traits or diseases.

Adaptive Evolution

The method by which populations adapt to their surroundings by evolving genetic characteristics across generations.