KROK 1 2015 – Question 103 · KROK (Medicine) · Biology
Sex chromosomes of a woman didn’t separate and move to the opposite poles of a cell during gametogenesis (meiosis). The ovum was impregnated with a normal spermatozoon. Which chromosomal disease can be found in her child?
- A. Edwards’ syndrome
- B. Patau’s syndrome
- C. Cat cry syndrome
- D. Turner’s syndrome
- E. Down’s syndrome
Hint
Consider which gametes arise when the X chromosomes fail to separate, and what a sperm with a normal sex chromosome produces on fusing with each type of egg.
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