Which of the following is correct about Rosie, the first transgenic cow?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Both (1) and (2)
Rosie was the first transgenic cow, produced in 1997. A human gene was introduced into her, so her milk carried a human protein. Such animals are one way of getting useful biological products.
Option (1) It produced human protein-enriched milk. — Correct statement, but it is only one of the correct points, so on its own it is not the answer. Rosie produced human protein-enriched milk.
Option (2) Its milk contained the human alpha-lactalbumin. — Correct statement, but it is only one of the correct points, so on its own it is not the answer. The human protein in her milk was alpha-lactalbumin.
Option (3) Its milk was nutritionally a more balanced product for human adults than natural cow-milk. — Incorrect. Her milk was a more balanced product for human babies, not adults, than natural cow-milk.
NCERT Extract:
Transgenic Animals – “… Similar attempts are being made for treatment of phenylketonuria (PKU) and cystic fibrosis. In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk (2.4 grams per litre). The milk contained the human alpha-lactalbumin and was nutritionally a more balanced product for human babies than natural cow-milk.”