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  5. Principle Of Inheritance And Variation

12th Class Biology Principle Of Inheritance And Variation Question Bank MCQs - Principles of Inheritance and Variation

  • question_answer
    Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows that :

    A) Y-chromosome is essential for sex determination in Drosophila

    B) Y-chromosome in female determining in Drosophila

    C) Y-chromosome is male determining in human beings

    D) Y-chromosome has no role in sex determination either in Drosophila or in human beings

    Correct Answer: C

    Solution :

    Y-chromosome is male determining in human beings


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