Medical Emergencies · single question
The most common autosomal chromosomal abnormality compatible with life is:
Show answer and explanation
Correct answer: C. Trisomy 21 (Down syndrome)
- A. Patau syndrome is far less common and usually lethal early.
- B. Edwards syndrome is less common and usually lethal in infancy.
- C. Correct. Trisomy 21 is the most common autosomal trisomy.
- D. Turner syndrome is a sex-chromosome monosomy, not the most common autosomal defect.
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