KROK 1 2018 – Question 42 · KROK (Medicine) · Biology
A 40-year-old pregnant woman underwent amniocentesis. Examination determined the fetal karyotype to be 47, XY+21. What fetal pathology was detected?
- A. Down syndrome
- B. Turner syndrome
- C. Patau syndrome
- D. Klinefelter syndrome
- E. Phenylketonuria
Hint
Decode the karyotype notation: the total chromosome count, the sex chromosomes, and which autosome is present in an extra copy.
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