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NEET Biology Principle Of Inheritance And Variation Question Bank Sex Determination

  • question_answer
    Barr bodies (seen in saliva test in Olympic games) are found in human and are associated with [BHU 1970, 99, 2002; CBSE PMT 1992; MP PMT 1997, 98; KCET  1998]

    A) Male autosome

    B) Female autosome

    C) Female sex chromosome

    D) Male sex chromosome

    Correct Answer: C

    Solution :

    According to the British geneticist Mary Lyon (1961), One of the two X-chromosomes of a normal female becomes heterochromatic and appears as Barr body.


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