Genome Blog #9 Stress

Ridley says that this gene is located in the chromosome number 7. The brain, the body, and the gene are locked in constant. The gene CYP17 is located in chromosome number 10 is responsible for the synthesis of an enzyme that enables the body to convert cholesterol to cortisol,to  testosterone, and to oestradiol. Cortisol, is released when the brain signals stress and sets off a long chain triggers, switching genes on and off thus causing other genes to be switched on or off constantly. Ridley compares the world to the human body, which is full of intricate interconnected systems with no control what so ever. Ridley concludes that there are no logical explanation for the correlation between steroids and immune system suppressions.