CUIZ-FACT-78BC8BA7
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Science & Nature
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Down Syndrome is usually caused by an extra copy of which chromosome?
Verified Answer
21
Quiz Options
- 21
- 23
- 15
- 24
Explanation & Context
Down syndrome, also known as Trisomy 21, occurs when an individual has three copies of chromosome 21 instead of the usual two. This extra genetic material alters the course of development and causes the characteristic features associated with the condition.
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