6.1.2 Gene Control

Question 1

What do regulatory mechanisms do?

Answer 1

Control which genes are expressed at different times

(not all genes are expressed in every cell at the same time)

Question 2

What are the 3 main types of regulatory mechanism?

Answer 2

• Transcriptional level (eg. Lac Operon)
• Post-Transcriptional level
• Post Translational level

Question 3

What is the relationship between structural and regulatory genes?

Answer 3

Structural genes code for proteins that have a function within a cell, and regulatory genes code for proteins which control the expression of these structural genes.