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10th Standard English Medium Science Subject Genetics Book Back 1 Mark Questions with Solution Part - I Question Bank Software Jun-11 , 2021

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10th Standard English Medium Science Subject Genetics Book Back 1 Mark Questions with Solution Part - I

10th Standard English Medium Science Subject Genetics Book Back 1 Mark Questions with Solution Part - I

10th Standard

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Science

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5

  1. 9 : 3 : 3 : 1 ratio is due to

    (a)

    Segregation

    (b)

    Crossing over

    (c)

    Independent assortment

    (d)

    Recessiveness

  2. The region of the chromosome where the spindle fibres get attached during cell division

    (a)

    Chromomere

    (b)

    Centrosome

    (c)

    Centromere

    (d)

    Chromonema

  3. The centromere is found at the centre of the ________________ chromosome

    (a)

    Telocentric

    (b)

    Metacentric

    (c)

    Sub-metacentric

    (d)

    Acrocentric

  4. Okasaki fragments are joined together by ___________________.

    (a)

    Helicase

    (b)

    DNA polymerase

    (c)

    RNA primer

    (d)

    DNA ligase

  5. The loss of one or more chromosome in a ploidy is called_____________.

    (a)

    Tetraploidy

    (b)

    Aneuploidy

    (c)

    Euploidy

    (d)

    Polyploidy

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