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प्रश्न
Down’s syndrome occurs as a result of ______.
विकल्प
trisomy
tetrasomy
autopolyploidy
allopolyploidy
MCQ
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उत्तर
Down’s syndrome occurs as a result of trisomy.
Explanation:
Down’s syndrome is caused by an extra copy of chromosome 21, known as trisomy 21. It is not caused by polyploidy.
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