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Principles of I...

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  • Question 1
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    The genotypes of a husband and wife are IA   IB  and IA i. Among the blood types of their children how many different genotypes and phenotypes are possible?

     

  • Question 2
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    Inheritance of skin colour in human beings is an example of _______.

     

  • Question 3
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    Which of the following is an example of co-dominance?

     

  • Question 4
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    A human male produces sperms with the genotypes AB, Ab, aB, ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person?

     

  • Question 5
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    In Mirabilis jalapa, when two F1 pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of:

     

  • Question 6
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    Assertion: The cross between red and white flower-bearing snapdragon plants results in pink coloured flower.
    Reason: Incomplete dominance of red and white flower results in pink coloured flowers.

     

  • Question 7
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    People suffering from colour blindness fail to distinguish which of the two colours?

     

  • Question 8
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    Plotting of specific genes on the chromosome is known as _________.

     

  • Question 9
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    When two genes are situated very close to one another on a chromosome _________.

     

  • Question 10
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    XY chromosome that determine the sex in human beings are:

     

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