Animals that have their DNA manipulated to possess and express an extra (foreign) gene are known as transgenic animals. Which one of the following pairs of animals do not represent transgenic animals?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Monkey and horse
Transgenic animals are animals whose DNA has been changed so that they carry and express an extra, foreign gene. The transgenic animals that have been produced are rats, rabbits, pigs, sheep, cows and fish. More than 95 per cent of all transgenic animals are mice.
(1) Monkey and horse — Not transgenic animals. Neither animal is among the transgenic animals that have been produced.
(2) Rats and rabbits — Transgenic animals. Both are named as transgenic animals.
(3) Pigs and sheep — Transgenic animals. Both are named as transgenic animals.
(4) Cows and fish — Transgenic animals. Both are named as transgenic animals. The first transgenic cow, Rosie, gave milk rich in a human protein.
NCERT Extract:
Transgenic Animals –
