25.4 Control of Gene Expression

What is an operon?

• A cluster of genes that codes for proteins for a specific metabolic pathway

• A protein that binds to the operator, preventing translation

• A regulator protein in transcriptional control

What species of bacteria does the chapter use as an example for prokaryotic control of gene expression?

• E. coli

• Streptococcus

• Staphylococcus

• E. faecalis

What is the only mechanism of control that prokaryotes use?

• Pretranscriptional Control

• Transcriptional Control

• Posttranscriptional Control

• Translational Control

What animal does the textbook use as an example for X-inactivation?

• Tortoiseshell Cats

• Escherichia coli

• Alaskan Malamutes

• Roosters

This operon is present in bacteria, and is focused on in 25.4

• The lac operon

• The gluc operon

• The peptin operon

• The eth operon