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Principles of I...

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  • Question 1
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    Chromosome theory of sex determination was propounded by 

  • Question 2
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    Study the statements given below.
    X: In humans, the gamete contributed by the male determines whether the child produced will be male or female.

    Y: Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on X chromosome and some on Y chromosome.

  • Question 3
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    In peas, a pure tall plant (TT) is crossed with a short plant (tt). The homozygous ratio of pure tall plants to short plants in F$$_{2}$$ is

  • Question 4
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    The genotype of offspring formed from Tt x tt will be ________.

  • Question 5
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    Which one of the following is an example of polygenic inheritance ?

  • Question 6
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    The Hardy-Weinburg principle cannot operate if

  • Question 7
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    Given the pair of contrasting traits of the following characters in pea plant and mention if it's dominant or recessive.

    Round seed

  • Question 8
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    Probability of four son to a couple is 

  • Question 9
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    A test cross is done to find out

  • Question 10
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    The crossing of an organism with a double (homozygous) recessive in order to determine whether it is homozygous or heterozygous for a character under consideration is known as

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