Which of the following transgenic animals are used to test the safety of the polio vaccine before its administration to humans?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Transgenic mice
Transgenic animals carry and express an extra (foreign) gene. One of their uses is vaccine safety testing. Transgenic mice are being used to test the safety of the polio vaccine before it is given to humans. If this proves reliable, they could replace monkeys in such tests.
NCERT Extract:
Transgenic Animals – “… (iv) Vaccine safety: Transgenic mice are being developed for use in testing the safety of vaccines before they are used on humans. Transgenic mice are being used to test the safety of the polio vaccine. If successful and found to be reliable, they could replace the use of monkeys to test the safety of batches of the vaccine.”