KROK 1 2012 – Question 5 · KROK (Medicine) · Biology
Examination of newborns in one of the Ukrainian cities revealed a baby with phenylketonuria. The baby’s parents don’t suffer from this disease and have two other healthy children. Specify the most likely parents’ genotype with phenylketonuria gene:
- A. AA x aa
- B. Aa x AA
- C. aa x aa
- D. Aa x aa
- E. Aa x Aa
Hint
Phenylketonuria is an inherited enzyme deficiency: ask what genotype two unaffected parents must each have if one of their children is affected.
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