You have tens of thousands of genes in your genome. Does that mean your cells express all of those genes, all the time? Not by a long shot! Even an organism as simple as a bacterium must carefully regulate gene expression, ensuring that the right genes are expressed at the right time. Learn more about the mechanisms cells use to turn genes "on" and "off."
Do you think of bacteria as boring blobs? How about as little calculators? Bacterial gene regulation networks essentially perform logic operations using proteins and DNA. Learn more about how bacterial genes are organized and how their expression is regulated.