NEET-XII-Physics

Previous Year Paper year:2017

with Solutions -
  • #147
    In Antirrhinum (Snapdragon), a red flower
    was crossed with a white flower and in ``F_1`` generation pink flowers were obtained. When
    pink flowers were selfed, the ``F_2``
    generationshowed white, red and pink flowers. Choose
    the incorrect statement from the following :
    (1) This experiment does not follow the
    Principle of Dominance.
    (2) Pink colour in ``F_1`` is due to incomplete
    dominance.
    (3) Ratio of ``F_2``
    is ``\frac14`` (Red) : ``\frac24``(Pink) : ``\frac14`` (White)
    (4) Law of Segregation does not apply in this
    experiment
    digAnsr:   4
    Ans : ( 4 )
    Sol. Genes for flower colour in snapdragon shows
    incomplete dominance which is an exception
    of Mendel's first principle i.e. Law of
    dominance.
    Whereas Law of segregation is universally
    applicable.