AIIMS AIIMS Solved Paper-2001

  • question_answer
    Barr-body in mammals represents:

    A)  one of the two X-chromosomes in cells of female

    B)  all heterochromatin of male and female cells

    C)  Y-chromosome of male

    D)  all heterochromatin of female cells

    Correct Answer: A

    Solution :

    Barr-body in mammals represent one of the two X-chromosomes in cells of female. It represents the facultative heterochromatin of inactivated X-chromosome.


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