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Biology · 2024 · 3 marks
CBSE 2024 · Region 5 · Set 1 · Q24
(a) What are transgenic animals? (b) Name the transgenic animal having the largest number amongst all the existing transgenic animals. (c) State any…
(a)
What are transgenic animals ?
(b)
Name the transgenic animal having the largest number amongst all the existing transgenic animals.
(c)
State any $\displaystyle 3$ reasons for which these types of animals are being produced.
Marking-scheme solution
(a)
Animals that have had their DNA manipulated to possess and express an extra or foreign gene or desirable foreign gene.
(b)
Mice
(c)
₋
To study the effect of gene on normal physiology and development.
₋
To study how gene contribute the development of disease
₋
To obtain useful biological products
₋
To use in testing the safety of vaccines
₋
For chemical safety testing / used for testing toxicity of drugs.
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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.