Multiple Choice Questions

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Which one of the following is used as a vector for cloning the gene into higher organisms?

  • Baculovirus

  • Salmonella typhimurium

  • Rhizopus nigricans

  • Rhizopus nigricans


D.

Rhizopus nigricans

Retroviruses are RNA-containing animal viruses that replicate through a DNA intermediate.  Retroviruses in animals have the ability to transform normal cells into cancerous cells. A better understanding of the act of delivering genes by pathogen into useful vectors for delivering genes of interest of humans. Retroviruses have been disarmed and are now used to deliver desirable genes into animals cells.

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Which one of the following also acts as a catalyst in a bacterial cell?

  • sn RNA

  • hn RNA

  • 23 S rRNA

  • 23 S rRNA

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Silencing of mRNA has been used in producing transgenic plants resistant to

  • bollworms

  • nematodes

  • White rusts

  • White rusts

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The unequivocal proof of DNA as the genetic material came from the studies on a 

  • bacterium

  • fungus

  • viroid

  • viroid

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Which one of the following techniques made it possible to genetically engineer living organism

  • Recombinant DNA techniques

  • X -ray diffraction

  • Heavier isotope labelling

  • Heavier isotope labelling

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The one aspect which is not a salient feature of genetic code is its being

  • degenerate

  • ambiguous

  • universal

  • universal

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Which one of the following palindromic base sequences in DNA can be easily cut at about the middle be some particular restriction enzyme?

  • 5'-CGTTCG -3'
    3'-ATCCTA-5'

  • 5'-GATATG-3'
    3'-CTACTA-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

  • 5'-GAATTC-3'
    3'CTTAAG-5'

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DNA and RNA segment tagged wit  a radioactive molecule is called

  • vector

  • probe

  • clone

  • clone

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Genetic engineering has been successfully used for producing

  • transgenic mice for testing safety to polio vaccine before use in humans

  • transgenic models for studying new treatments for certain cardiac diseases

  • transgenic cow -Rosie which produces high-fat milk for making ghee

  • transgenic cow -Rosie which produces high-fat milk for making ghee

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Satellite DNA is useful tool in 

  • Organ transplantation

  • sex determination

  • forensic science

  • forensic science

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