Transgenic animals are developed by

Some genes of transgenic animals are made .....$X$..... to certain .....$Y$..... substances.

Assertion: Animals that have had their $\text{DNA}$ manipulated to possess and express an extra (foreign) gene are known as transgenic animals.
Reason: Transgenic animals are made that carry genes which make them less sensitive to toxic substances than non-transgenic animals.

Define transgenic animals. Explain in detail any four areas where they can be utilised.

For how many of the following diseases are transgenic animal models available?
Cancer,Cystic fibrosis,Pneumonia,Rheumatoid arthritis,Typhoid,Alzheimer's,Malaria

Why are transgenic animals produced?