Osmosis video - Gene regulation

Gene regulation is the process by which a gene's expression is controlled. This control may be either activation or inhibition. Activational gene control occurs when a particular gene is turned on in response to some signal or stimulus. For example, genes that code for insulin production necessary for the body to metabolize sugar will be active (or "turned on") only when blood sugar levels are high.

Inhibitational gene control, on the other hand, happens when a particular gene is turned off in response to some signal or stimulus. For example, genes that code for insulin production will be inactive when blood sugar levels are low.