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NEET Biology Principle Of Inheritance And Variation Question Bank Self Evaluation Test - Principles of Inheritance and Variation

  • question_answer
    In fruit flies, dumpy wings are shorter and broader than normal wings. The allele for normal wings [D] is dominant to the allele for dumpy wings [d]. Seventy five normal-winged and twenty five dumpy-winged flies. The genotype of parents would be.

    A) DD and D    

    B)                    DD and Dd

    C) Dd and Dd 

    D)                    Dd and dd

    Correct Answer: C

    Solution :

    [c] If both parents have normal wings (DD or Dd), there are three possible parent crosses: DD x Dd, Dd x Dd, or Dd x Dd. All of the progeny of DD x DD and of DD x Dd would have normal wings. Only the progeny of Dd x Dd would consist of 3/4 normal winged flies.


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