KROK 1 2014 – Question 164 · KROK (Medicine) · Biology
An underage patient has signs of achondroplasia (dwarfism). It is known that this is a monogenic disease and the gene that is responsible for the development of such abnormalities is a dominant one. The development of that child’s brother is normal. Specify the genotype of the healthy child:
- A. AABB
- B. AaBb
- C. AA
- D. aa
- E. Aa
Hint
Consider what allele makeup a person who lacks a dominantly inherited trait must have, remembering that only a single gene is involved.
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