KROK 1 2014 – Question 149 · KROK (Medicine) · Biology
A 2-year-old boy is diagnosed with Down syndrome. What chromosomal changes may be the cause of this disease?
- A. Trisomy 13
- B. Trisomy 18
- C. Monosomy X
- D. Trisomy 21
- E. Trisomy X
Hint
Recall the karyotype classically associated with this most frequent chromosomal syndrome of childhood, and the meiotic error that usually produces it.
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