Question

Animals that have their DNA manipulated and express foreign gene are called transgenic animals. Write down the three significance of transgenic animals used as models.

Answer 1

1. Normal physiology and development:

To study of how genes are regulated, and how they affect the normal functions of the body and its development.

2. Study of disease:

How genes contribute to the development of disease.

3. Chemical and vaccine safety testing:

Transgenic animals carry genes that sensitive to toxic substances and the effects can be studied.