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Biology · 2024 · 2 marks
CBSE 2024 · Region 4 · Set 3 · Q17
(a) Name the first developed transgenic cow. (b) Explain the improvement in the quality of the milk produced by it.
(a)
Name the first developed transgenic cow.
(b)
Explain the improvement in the quality of the milk produced by it.
Marking-scheme solution
(a)
Rosie is the first transgenic cow
(b)
The milk contained human protein alpha-lactoalbumin ($\displaystyle 2$⋅$\displaystyle 4$ g per liter) which is nutritionally a more balanced product than natural cow-milk.
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CBSE Class 12 Biology past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.