What type of regulation is exemplified by the lac operon?

₹0.0

Question: What type of regulation is exemplified by the lac operon?

Options:

Correct Answer: Negative regulation

Solution:

The lac operon is an example of negative regulation, where the binding of the repressor to the operator inhibits transcription.

What type of regulation is exemplified by the lac operon?

What type of regulation is exemplified by the lac operon?

Step 1: Understand what the lac operon is. It is a group of genes in bacteria that help them digest lactose.
Step 2: Learn about regulation in genetics. Regulation controls when and how genes are turned on or off.
Step 3: Identify the two types of regulation: positive regulation (which activates transcription) and negative regulation (which inhibits transcription).
Step 4: Focus on negative regulation. This means that something (a repressor) can stop the gene from being expressed.
Step 5: In the lac operon, a repressor protein binds to a specific part of the DNA called the operator.
Step 6: When the repressor is bound to the operator, it prevents the transcription of the genes needed to digest lactose.
Step 7: Conclude that the lac operon is an example of negative regulation because the repressor inhibits transcription.

No concepts available.