12th Class Biology Sample Paper Biology - Sample Paper-6

  • question_answer
    Discuss Down's syndrome.

    Answer:

    Down's Syndrome 
    - Occur due to Trisomy of 21st chromosome.
    - Characterized with rounded face, flaccid muscle, protruding tongue, broad neck, etc.
    - Also called Mongoloid syndrome.
    - Survivors of down syndrome have higher chances of catching leukaemia & Alzheimers disease.


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