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Q26. Restriction endonucleases were used by Cohen and Boyer's DNA experiments for-
- AIsolation of cloned hacterial plasmids
- BCleaving the bacterial plasmid
- CIsolation of human insulin
- DBoth a and b
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Answer: B) Cleaving the bacterial plasmid
Q27. What is the application of Somatic Cell Nuclear Transfer Technology ?
- AProduction of biolarvicides
- BManufacture of biodegradable plastics
- CReproductive cloning of animals
- DProduction of organisms free of diseases
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Answer: C) Reproductive cloning of animals
Q28. A method used to distinguish DNA of one individual from another is-
- ADNA sequencing
- Bc DNA
- CHybridisation
- DRestriction fragment length polymorphism
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Answer: D) Restriction fragment length polymorphism
Q29. Which is used extensively for genetic engineering in plant ?
- AAgrobacterium tumefaciens
- BXanthomonas citri
- CBacillus coagulans
- DClostridium septicum
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Answer: A) Agrobacterium tumefaciens
Q30. A genetically engineered form of brinjal known as the Bt-brinjal has been developed. The objective of this is-
- ATo make it pest-resistant
- BTo improve its taste and nutritive qualities
- CTo make it drought resistant
- DTo make its self-life linger
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Answer: A) To make it pest-resistant
Q31. Bt seed is associated with-
- ARice
- BWheat
- CCotton
- DOil seed
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Answer: C) Cotton
Q32. What is Cas 9 protein that is often mentioned in news ?
- AA molecular secissors used in targeted gene editing
- BA biosensor used in the accurate detection of pathogens in patients
- CA gene that makes plants pest-resistant
- DA herbicidal substance synthesized in genetically modified crops
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Answer: A) A molecular secissors used in targeted gene editing
Q33. Bollgard I and Bollgarg II technologies are mentioned in the context of-
- AClonal propagation of crop plant
- BDeveloping genetically modified crop plants
- CProduction of plant growth sabstances
- DProduction of biofertilizers
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Answer: B) Developing genetically modified crop plants