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A pure dominant pea plant producing roun...

A pure dominant pea plant producing round - yellow seeds is crossed with pure recessive pea plant producing wrinkled - green seeds, The numbers of plants bearing round - green seeds in the `F_(1)` generation of Mendel's experiment is

A

0

B

1

C

3

D

9

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The correct Answer is:
A
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In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F_(1) -generation?

If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant, (rr YY) the seeds produced in F 1 generation are

In a cross between round yellow seeds (RRYY) and wrinkled green seeds (rryy) of pea plant, what is the ratio of plants obtained in F_(2) generation?

In one of his experiments with pea plants Mendel observed that when a pure tall pea plant is crossed with a pure dwarf pea plant, in the first generation, F_(1) only tall plants appeared. (i) What happens to the traits of the dwarf plants in this case? (ii) When the F_(1) generation plants were self-fertilised, he observed that in the plants of second generation, F_(2) both tall plants and dwarf plants were present. Why it happened? Explain briefly.

With the help of a cross done with garden pea plants, trace the work done by Mendel with a tall and a short plant to arrive at a 3:1 ratio in the F_(2) generation.

CPC CAMBRIDGE PUBLICATION-MARCH - 2019 QUESTION PAPER - 10-QUESTIONS
  1. A pure dominant pea plant producing round - yellow seeds is crossed wi...

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  2. The functions of hormones are given in Column-A and the names of the h...

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  3. Name the acid present in the stinging hairs of nettle leaves.

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  4. What are fossils ?

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  5. Convex mirror is commonly used as rear view mirror in vehicles. Why?

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  6. What is roasting in metallurgy ?

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  7. Observe the given figure. Name the eye defect indicated in the figue s...

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  8. What is Tyndall effect ?

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  9. Under what condition lactic acid is produced in the muscle cells ?

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  10. Draw the diagram of an electric circuit in which the resistors R(1),R(...

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  11. Name the brown fumes liberated when lead nitrate is heated. Write the ...

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  12. Explain the process of translocation of food materials in plants.

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  13. Explain the process of digestion in the small intestine of man. Dige...

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  14. Draw the diagram of a simple electric motor. Label the following parts...

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  15. What are structural isomers? Name the first member of alkanes that sho...

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  16. Draw the diagram showing the longitudinal section of a flower. Label...

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  17. Draw the diagram of arrangement of apparatus used to show the reaction...

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  18. What are the advantages of connecting electrical devices in parallel w...

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  19. According to Joule's iaw of heating, mention the factors on which heat...

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  20. List the disadvantages of using fosil fuels.

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  21. List the advantages of 'reduce' and 'reuse' to save environment. Advan...

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