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Biology · 2024 · 3 marks
CBSE 2024 · Region 4 · Set 1 · Q28
Explain the role of transgenic animals in: (a) Production of Biological products (b) Studying diseases (c) Chemical safety testing
Explain the role of transgenic animals in :
(a)
Production of Biological products
(b)
Studying diseases
(c)
Chemical safety testing
Marking-scheme solution
(a)
Production of Biological products- Human protein α-$\displaystyle 1$ antitrypsin used to treat emphysema produced by transgenic organism / Transgenic cow ‘Rosie’ produce human protein enriched in α- lactalbumin
(b)
Studying Diseases- Transgenic models of human diseases like cystic fibrosis, cancer etc. are designed to increase our understanding of how genes contribute to development of disease.
(c)
Chemical safety testing- Transgenic animals are made that carry genes which make them more sensitive to toxic substance. They are then exposed to toxic substance and the effect studied.
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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.