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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

Text Solution

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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.

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F_(1) plants were selfed the resulting genotypes were in the ratio of

ZEN PUBLICATION-HEREDITY AND EVOLUTION -ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE CHOICE QUESTIONS)
  1. Select the set of homologous organs from the following

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  2. Which of the following is a correct set of homologous organs?

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  3. Which of the following is a totally is impossible outcome of Mendel's ...

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  4. Which of the following is not a direct conclusion that can be drawn fr...

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  5. Which one is a possible progeny in F2 generation of pure bred tall pl...

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  6. Which section of DNA provides information for one protein

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  7. Which of th following is not controlled by genes? 1] Weight of a per...

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  8. Which of the these is homozygous recessive?

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  9. What will be the genotypic ratio of the cross between Rr and rr?

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  10. What will be the genotypic ratio of the cross between Rr and Rr?

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  11. The offspring resulting from a cross between two pure homozygous reces...

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  12. Which of the following sentences is true about the evolutionary proces...

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  13. In man the chromosome number is 46. How many chromosome are present in...

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  14. Speciation takes place when variation occurs with

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  15. By studying analogous structures we look for

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  16. Which of the following are not examples of analogous structures?

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  17. Speciation is the evolutionary process by which

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  18. In dogs the chromosome number is 78. How many chromosomes are present ...

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  19. A pure dominant pea plant producing round - yellow seeds is crossed wi...

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  20. Observe the table which shows contrast forms of pea plants: {:("Colou...

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