KROK 1 2020 – Question 99 · KROK (Medicine) · Biology
A woman gave birth to twins. One of them was provisionally diagnosed with Cri-du-chat syndrome that manifests as underdeveloped laryngeal muscles and ’’meowing” voice timbre. This syndrome occurs because of chromosome mutation. What method can verify or refute this diagnosis?
- A. Biochemical
- B. Cytogenetic
- C. Population statistics
- D. Amniocentesis
- E. Twin study
Hint
The stem tells you which level of the genome is altered; choose the investigation that examines that level directly and can be done on a living child.
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