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

  • question_answer
    Drosophila flies with XXY genotype are females but in case of humans, such individuals are abnormal males (Klinefelter's syndrome). This indicates that:

    A) The Y chromosome has no role in sex determination.

    B) In Drosophila, the Y chromosome is essential for sex determination.

    C) The Y chromosome is male determining in humans.

    D) The Y chromosome is female determining in Drosophila.

    Correct Answer: C

    Solution :

    [c] In human, the Y chromosome bears the androgenic factor or the male determining factor. Whereas, in Drosophila, the ratio of sex chromosomes to autosomes is the factor determining sex of the individual.


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