Trp therefore acts as a self-governor by regulating its own production through a negative feedback loop. Mutations that ... in other words, they control the expression of genes on the same ...

Reinforcing loops, also known as positive feedback loops, amplify changes within a system, leading to exponential growth or decline and causing instability if not controlled. This type of loop can ...

The release of testosterone is controlled by a negative feedback system: build up of testosterone concentration in the blood inhibits the secretion of FSH and ICSH from the pituitary gland ...

Save guides, add subjects and pick up where you left off with your BBC account. The control of thyroxine levels by the hypothalamus and pituitary gland is an example of negative feedback.