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Transgenic animals have been used:...

Transgenic animals have been used:

A

for testing safety of vaccines

B

for testing toxicity of drugs

C

to produce useful biological products

D

all of the above

Text Solution

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The correct Answer is:
D
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Read the following text and answer the following questions on the basis of the same: Transgenic animals have their DNA manipulated to possess and express an extra gene. The genome of these animals has been changed and they can carry genes from other species. The first transgenic sheep was Tracy. The reason behind producing these transgenic animals are for specific economic trait, some are produced as disease models (animals genetically manipulated to exhibit disease symptoms so that effective treatment can be studied) ___ were the first mammals to be transgenic animals.

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Majority of transgenic animals are :

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GRB PUBLICATION-BIOTECHNOLOGY : APPLICATION IN AGRICULTURE AND HEALTH-Assertion-Reason Type Questions
  1. Transgenic animals have been used:

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  2. (A) : Genetic engineering is now considered as a kind of biotechnolog...

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  3. (A) : Genetic engineering can be used to improve the quality of huma...

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  4. (A) : A vector is used as carrier for transferring selected genes to a...

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  5. (A) : Agrobacterium Ti plasmid is used to induce genetic transformatio...

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  6. (A) : Chimera is an animal that is a mix of several other animals. (...

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  7. (A) : Animal cloning is more difficult than plant cloning. (R) : Ani...

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  8. (A) : Restriction endonuclease is an enzyme obtained from bacteriophag...

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  9. (A) : Restriction endonuclease are referred to as the immune system of...

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  10. (A) : Palindromes are nucleotide- pair sequences that read the same f...

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  11. (A) : Ethidium bromide is a known mutagen. (R) : It can be used to ...

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  12. (A) : DNA is a hydrophobic molecule. (R) : It can pass through cell ...

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  13. (A) : In agarose gel electrophoresis, DNA moves towards the positive e...

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  14. (A) : The thermal cycler is a laboratory apparatus. (R) : It is used...

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  15. (A) : PCR is a method for amplifying a specific piece of DNA. (R) : ...

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  16. (A) : The Bt toxin proteins exist as inactive protoxins. (R) : It is...

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  17. (A) : RNAi takes place in all eukaryotic organisms as a method of cell...

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  18. (A) : In mammals insulin is synthesized in pancreas in mature form. ...

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  19. (A) : ADA deficiency is a genetic disease. (R) : It is caused by a m...

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  20. (A) : Hybridoma is a cell formed by the fusion of a cancer cell with a...

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  21. (A) : Monoclonal antibodies are true "magic bullets". (R) : They str...

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