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Down syndrome is caused by:

Practice MCQ for SSC, UPSC, RRB Exams

A. Environmental factors A.

B. Viral infection B.

C. Hormonal imbalance C.

D. Chromosomal abnormality D.

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

Down syndrome occurs when an individual has an extra copy of chromosome 21, resulting in a condition called trisomy 21. This chromosomal abnormality is the primary cause of Down syndrome.

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Down syndrome is caused by:

Practice MCQ for SSC, UPSC, RRB Exams

Correct Answer: D সঠিক উত্তর: D

Explanation ব্যাখ্যা

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