KVPY Sample Paper KVPY Stream-SX Model Paper-23

  • question_answer
    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 \[{{F}_{2}}\]generation showed white, red and pink flowers. Choose the incorrect statement from the following:

    A) This experiment does not follow the Principle of Dominance.

    B) Pink colour in \[{{F}_{1}}\] is due to incomplete dominance.

    C) Ratio of \[{{F}_{2}}\] is \[\frac{1}{4}\] (Red) : \[\frac{2}{4}\](Pink) : \[\frac{1}{4}\](White)

    D) Law of Segregation does not apply in this Experiment

    Correct Answer: D

    Solution :

    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.


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