Question

Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product to treat
a. Emphysema
b. Cystic fibrosis
c. Phenylketonuria (PKU)
d. Alzheimer’s disease

• A. a, b and c
  
• B. a, b, c and d
  
• C. a and c
  
• D. a and b

Answer 1

The correct option is A a, b and c


Transgenic animals
Transgenic animals are animals that have one or more foreign genes from another species introduced into them by artificial means for the expression of a particular phenotype.

Biological products
Transgenic animals can be used to make biological products by introducing the genes that code for those biological products. These biological products can be used to cure certain diseases too.
For example:

• Alpha-1 antitrypsin is produced to treat emphysema in a transgenic sheep, Tracy.
• Similarly, attempts are made for producing biological products to treat cystic fibrosis and phenylketonuria.

Final answer
a. a, b and c