Identify the statements which hold true for transgenic animals.
(A) Transgenic animals can be used to study vaccine safety.
(B) Over 95% of transgenic animals are mice
(C) Transgenic animals cannot be used to study human diseases
(D) Transgenic animal possess and express foreign gene
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A), (B) and (D) Only
(A) Transgenic animals can be used to study vaccine safety. — True. Transgenic mice test the safety of polio vaccine.
(B) Over 95% of transgenic animals are mice — True.
(C) Transgenic animals cannot be used to study human diseases — False. Transgenic models exist for many human diseases.
(D) Transgenic animal possess and express foreign gene — True.
NCERT Extract:
Transgenic Animals – “… (ii) Study of disease: Many transgenic animals are designed to increase our understanding of how genes contribute to the development of disease. These are specially made to serve as models for human diseases so that investigation of new treatments for diseases is made possible. Today transgenic models exist for many human diseases such as cancer, cystic fibrosis, rheumatoid arthritis and Alzheimer’s.”