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NEET Biology Biotechnology And Its Applications Question Bank Genetic Variation

  • question_answer
    The number of chromosomes in Klinefelter?s syndrome is   [CPMT 1995; MP PMT 2003; DPMT 2004]

    A) 47 (44 + XXY)

    B) 47 (44 + XXX)

    C) 47 (46 + 1 chromosome 21)

    D) None of these

    Correct Answer: B

    Solution :

    Philadelphia chromosome is 22nd chromosome. It is so called because in 1960 investigation in philadelphia found that patients with chromic myeloid leukaemia have an abnormal chromosome later found to be 22nd.


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