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Construct an age pyramid which reflects ...

Construct an age pyramid which reflects a stable growth status of human population.

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The age pyramic that reflects a stable status of human populations can be represented as follows:
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XII BOARDS PREVIOUS YEAR-XII BOARDS-Section B
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  4. Work out a cross to find the genotype of a tall pea plant. Name the ty...

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  5. Why do algae and fungi shit to sexual mode of reproduction just before...

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  6. A cross was carried out between two pea plants showing the contrasting...

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  7. How does the gene 'I' control ABO blood grous in humans? Write the eff...

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  8. Write the types of sex-determination mechanisms the following crosses ...

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  9. i) Name the scientist who suggested that the genetic code should be ma...

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  10. State the disadvantage of inbreeding among cattle. How it can be overc...

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  11. Explain with the help of a suitable exmaple, the naming of a restricti...

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  12. State how has Agrobacterium tumefaciens been made a useful cloning vec...

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  13. Construct an age pyramid which reflects a stable growth status of huma...

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  14. Apart from being part of the food chain, predators play other importan...

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  15. How are 'sticky ends' formed on a DNA strand? Why are they so called ?

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  16. i)Name the scientist who suggested that the genetic code should be mad...

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  17. What is gene therapy? Name the first clinical case where it was used.

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  18. Why does the Bt toxin not kill the bacterium that produces it but kill...

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  19. Identify the following paris of Homologous or Analogous organs: i) S...

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  20. List the post-fertilization events in angiosperms.

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