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NEET Biology Principle Of Inheritance And Variation Question Bank Critical Thinking

  • question_answer
    In Drosophila melanogaster, 3 pairs of autosomes and sex chromosomes of XO type give rise to a normal male in appearance. In man, 22 pairs of autosomes and XO type of sex chromosomes form [MP PMT 1994]

    A) Normal female

    B) Normal male

    C) Klinefelter's syndrome

    D) Turner's syndrome

    Correct Answer: D

    Solution :

    In Drosophila male sex is determined by xo type of sex chromosomes, but in human male sex is determined by xy type of sex chromosomes. Therefore xo type of sex chromosomes in human male leads to turner?s syndrome.


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