What is the main purpose of operons in gene regulation?

Prepare for the VCE Biology Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

The main purpose of operons in gene regulation is to group genes with a common function. An operon is a cluster of genes that are transcribed together as a single mRNA molecule and regulated by a single promoter. This organization allows for coordinated expression of genes that encode proteins that work in concert to carry out a specific biological function, such as the metabolic pathway for utilizing a particular sugar. By coordinating their expression, cells can efficiently respond to environmental changes and conserve resources.

This concept is particularly well illustrated in prokaryotic systems like the lac operon in E. coli, which enables the bacterium to utilize lactose when it is available in the environment. The operon allows the bacterium to turn on multiple genes necessary for lactose metabolism simultaneously, rather than regulating each gene individually.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy