With respect to understanding 'diseases', discuss the importance of transgenic animal models.

(N/A) Many transgenic animals are designed to increase our understanding of how genes contribute to the development of disease.
These animals are specially created to serve as models for human diseases, which allows for the investigation and testing of new treatments.
By studying these models, researchers can observe the progression of diseases in a controlled environment.
Today, transgenic models exist for many human diseases, such as $Cancer$, $Cystic \text{ } fibrosis$, $Rheumatoid \text{ } arthritis$, and $Alzheimer's$ disease.