KROK 1 2018 – Question 180 · KROK (Medicine) · Biology
A person with the fourth blood group (genotype IAIB) has in erythrocytes both antigen A controlled by allele IA and antigen B controlled by allele IB. This phenomenon is an example of the following gene interaction:
- A. Complementarity
- B. Semidominance
- C. Polymery
- D. Codominance
- E. Epistasis
Hint
Ask whether this is an interaction between alleles of one gene or between different genes, and how the two alleles are expressed in the phenotype of the heterozygote.
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