NEET Biology Biotechnology And Its Applications Question Bank Genetic Variation

  • question_answer
    Who reported that Down's syndrome is due to extra 21st chromosome    [BVP 2000]

    A) J.L. Down (1866)

    B) Lejeune (1959)

    C) Kinefelter (1942)

    D) Huntington (1872)

    Correct Answer: A

    Solution :

    Down?s syndrome is due to trisomy of 21st chromosome was first reported in 1866 by Langdon Down.


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