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1. Down syndrome হলো একটি __
- A. Genetic disorder
- B. Genetic disorder
- C. Genetic disorder
- D. Genetic disorder
Answer: Option A
Explanation:
Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is usually associated with physical growth delays, mild to moderate intellectual disability, and characteristic facial features.
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