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Q:

Which of the following is a correct match?

  • 1
    Down's syndrome - 21st chromosome
  • 2
    Sickle-cell anaemia - X-chromosome
  • 3
    Haemophilia - Y- chromosome
  • 4
    Parkinson's - X and Y-chromosome
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Answer : 1. "Down's syndrome - 21st chromosome "

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