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Suggest and describe a technique through...

Suggest and describe a technique through which a virus-free healthy piant can be obtained from a diseased sugarcane plant.

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XII BOARDS PREVIOUS YEAR-XII BOARDS-SET 1 [COMPTT]
  1. Human insulin when synthesised in the body needs to be processed befor...

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  2. Write any two ways how genetically modified plants are found to be use...

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  3. Provide two reasons that make the cound of prokaryotic species difficu...

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  4. Explain how does the inflow of large amount of nutrients like phosphat...

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  5. How is apomixis different from parthenocarpy ?

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  6. Describe any two modes by which apomictic seeds and be produced.

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  7. Why is haemophilia rare in human females ? Mention a clinical symptom ...

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  8. What are the transcriptional products of RNA polymerase III?

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  9. Differentiate between 'Capping' and 'Taling'.

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  10. Expand hrRNA.

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  11. Giving three reasons, write how Hardy-Weinberg equilibrium can be affe...

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  12. Do you support 'Dope' test being conducted on sportspersons perticipat...

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  13. Suggest and describe a technique through which a virus-free healthy pi...

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  14. How are Baculoviruses and Bacillus thuringiensis use as bio-control a...

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  15. Draw a schematic diagram of the E. coli cloning vector Pbr322 and mar...

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  16. Draw schematic diagrams of segments of a vector and a foreign DNA with...

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  17. Draw the vector DNA segment and foreign DNA segments after the action ...

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  18. Draw and explain expanding age pyramids of human population. Why is it...

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  19. Describe the formation of mature female gametophyte within an ovule in...

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  20. Describe the structure of the cell(s) that guide(s) the pollen tube to...

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