KROK 1 2017 – Question 174 · KROK (Medicine) · Biology

Deaf parents with genotypes DDee and ddEE gave birth to a child with normal hearing. Specify the interaction of D and E genes:

  1. A. Overdominance
  2. B. Complementary interaction
  3. C. Polymery
  4. D. Complete dominance
  5. E. Epistasis
Hint

Work out the genotype of the child and ask whether a dominant allele of one gene alone suffices for normal hearing or dominant alleles of both genes must be present together.

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