Physiology & Biochemistry · single question
Which is the most common trisomy in live births?
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Correct answer: A. Trisomy 21
- A. Correct. Trisomy 21 (Down syndrome) is the most common viable autosomal trisomy.
- B. Trisomy 18 (Edwards) is far less common and usually lethal early.
- C. Trisomy 13 (Patau) is rarer and usually lethal early.
- D. Trisomy 16 is the most common trisomy in conceptions but is not compatible with live birth.
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