The linnaeus(L) published a system for classifying living things, in today's worlds its the modern classification system. The L divides nature into three kingdoms, animal, vegetable(or plant), and minerals. (more smaller parts) As time pasted, and knowledge increased, other scientist added to the linnaeus original system.
So changes were made to update it from time to time.
Explanation:This hormone is considered a gonadotrophin hormone because of its role in controlling the function of ovaries in females and testes in males, which are known as the gonads.