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Biology · 2022 · 3 marks
Biotechnology and its ApplicationsBiotechnological Applications in Medicine3 marksUnderstandshort answer
CBSE 2022 · Region 1 · Set 1 · Q9
Name two naturally occurring sources, one that transfers pathogenic genes into a plant cells and the other into an animal cell respectively, for…
Name two naturally occurring sources, one that transfers pathogenic genes into a plant cells and the other into an animal cell respectively, for their benefit. Write how have these naturally occurring sources been used for the benefit of human race by the biotechnologists.
Marking-scheme solution
Agrobacterium tumefaciens-(plants pathogen), The disarmed Ti Plasmid is used as a vector to introduce the gene of interest in the variety of plants.
Retrovirus-(animals), Disarmed Retroviruses are used to transfer genes of interest in to mammalian host cells.
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CBSE Class 12 Biology past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.