In the human body genes perform what function?

In the human body, genes serve as the blueprints for the production of proteins, which are essential for the structure, function, and regulation of tissues and organs. They carry the instructions for inherited traits and play a crucial role in processes such as growth, development, and metabolism. Additionally, genes influence how the body responds to environmental factors and can affect susceptibility to diseases. Overall, they are fundamental to the biological processes that sustain life.