A child has a high-pitched cry, microcephaly and intellectual disability. Which chromosome abnormality is present?
Answer and explanation
Correct answer: A. Deletion of the short arm of chromosome 5
- Step 1: Cri-du-chat syndrome is a 5p deletion. Answer: Deletion of the short arm of chromosome 5. Why not the others: 15q deletion causes Prader-Willi or Angelman and 22q11 causes DiGeorge.
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