What is the role of a structural gene?

The role of a structural gene is to code for proteins that influence cellular structure or function. These genes are essential because they provide the instructions necessary for the synthesis of proteins, which are critical for various biological processes within the cell. Structural genes can code for a wide range of proteins, including enzymes, structural components like collagen, and other functional proteins involved in various metabolic pathways.

This foundational aspect allows organisms to develop and maintain their cellular structures and perform necessary physiological functions. Underpinning this is the fact that proteins are involved in nearly every cellular activity, contributing to the organism's overall health and viability. Thus, structural genes are integral in determining both the form and functional capabilities of cells in an organism.