In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk. The milk contained the _______ and was nutritionally a more balanced product for human babies than natural cow-milk.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Human alpha-lactalbumin
Option (3) Human alpha-lactalbumin — Correct. In 1997 the first transgenic cow, Rosie, produced milk containing the human protein alpha-lactalbumin, at 2.4 g per litre. This made her milk nutritionally more balanced for human babies than natural cow milk.
Note: A similar question was also asked in CUET (UG) 2025 on 20-05-2025 (Slot 1).
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.”