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Biology - section - 2
  1. In man there are how many pairs of homologous chromosomes?

    2. A.

     46
    B.

     23
    C.

     16
    D.

     11

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  2. It is composed of two polynucleotide chains which are coiled around each other in the form of a double helix.

    3. A.

     DNA
    B.

     RNA
    C.

     Fats
    D.

     None of the above

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  3. How many chromosomes are in a human gamete?

    4. A.

     23
    B.

     46
    C.

     92
    D.

     102

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  4. What is the unit of heredity?

    5. A.

     Cell
    B.

     Blood
    C.

     Gene
    D.

     All of the above

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  5. Who discovered genetic material?

    6. A.

     Crick and Watson
    B.

     Avery Mclood
    C.

     Friedrich Griffith
    D.

     Federik Meischer

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  6. Which one of the following is not a genetic disorder?

    7. A.

     Colour blindness
    B.

     Down's syndrome
    C.

     Haemophilia
    D.

     Xerophthalmia

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  7. Who is known as Father of Modern Genetics?

    8. A.

     Charles Darwin
    B.

     Louis Pasteur
    C.

     Gregor Mendel
    D.

     Jean Baptiste Lamarck

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  8. How many pairs of chromosomes are found in a human cell?

    9. A.

     18
    B.

     23
    C.

     27
    D.

     32

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  9. The experimental material used by Gregor Mendel is ________

    10. A.

     Pea plant
    B.

     Drossophila
    C.

     Potato plant
    D.

     None of the above

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  10. Mendel's second law is the law of

    11. A.

     Segregation
    B.

     Independent assortment
    C.

     Dominance
    D.

     Polygenic inheritance

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