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प्रश्न
Identify the option that correctly represents the number of chromosomes in Down syndrome.
विकल्प
22nd pair with an additional chromosome = 45
21st pair with an additional chromosome = 47
11th pair with an additional chromosome = 47
One extra sex chromosome = 47
MCQ
उत्तर
21st pair with an additional chromosome = 47
shaalaa.com
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