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Heredity and Ev...

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  • Question 1
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    A woman has only daughters. Which of the following is the suitable explanation for it?

  • Question 2
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    Match the following lists and choose the correct option.

    List IList II
    A. Genetic changes1. Homologous organ
    B.Independent inheritance                     2.Fossil
    C.Natural selection3.Analogous organ
    D.Dihybrid ratio4.XY
    E.Male human beings5.9 : 3 : 3 : 1
    F.Wing of a bat and a wing of a bird6.Darwin
    G.Remnant of ancient animals7.Mendel
    H.Arm of a man and wing of a bird8.DNA copying

  • Question 3
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    Organisms phenotypically similar but genotypically different are said to be

  • Question 4
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    Fill the blank circles in figure marked as A and B. Identify the sex of child A and B.

  • Question 5
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    If in a garden pea plant, a cross is made between red-flowered (RR) and white-flowered (rr) plants. What will be the phenotypic ratio in F$$_{2}$$ generation?

  • Question 6
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    What are the differences between inherited and acquired characters?

  • Question 7
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    In human beings, the statistical probability of getting either a male or a female child is 50:50. Which of the following is the cause behind it?

  • Question 8
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    Which of the following is the reason for the appearance of new combinations of characters in the F$$_{2}$$ progeny?

  • Question 9
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    Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce $$F_{1}$$ progeny that have round, yellow (RrYy) seeds. When $$F_{1}$$ plants are selfed, the $$F_{2}$$ progeny will have a new combination of characters. Choose the new combination from the following.

    (i) Round, yellow
    (ii) Round, green
    (iii) Wrinkled, yellow
    (iv) Wrinkled, green

  • Question 10
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    Directions For Questions

    A group of red beetles lives on green leaves of a tree. Beetles multiply through sexual reproduction. One day, some green beetles are seen among the red beetles. Green beetles breed to produce green progeny. Crows on the tree eat beetles.

    ...view full instructions

    Some green beetles appear among the red beetle because

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