What is the lac operon?
Understand the Problem
The question is related to the lac operon, a critical concept in genetics and biochemistry that explains the regulation of lactose metabolism in bacteria. It involves understanding how genes are expressed and regulated in response to environmental factors.
Answer
The lac operon is a group of genes in bacteria that allows the use of lactose.
The lac operon is an operon in bacteria, specifically E. coli, that consists of a group of genes responsible for the metabolism of lactose. It includes three main genes: lacZ, lacY, and lacA, which are regulated by a single promoter and allow bacteria to use lactose as an energy source.
Answer for screen readers
The lac operon is an operon in bacteria, specifically E. coli, that consists of a group of genes responsible for the metabolism of lactose. It includes three main genes: lacZ, lacY, and lacA, which are regulated by a single promoter and allow bacteria to use lactose as an energy source.
More Information
The lac operon is a classic example of gene regulation, helping bacteria adapt to environmental changes by using lactose only when it's present and glucose is not available.
Tips
Confusion can arise when distinguishing between the components (e.g., promoter, operator, and genes) and their roles. Review the regulatory mechanisms involving the repressor, operator, and inducer for clarity.
Sources
- The web page with info on - Khan Academy - khanacademy.org
- The Lac Operon Explained: What it is and how it works | IDT - idtdna.com
- Lac operon (video) - Khan Academy - khanacademy.org
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