KROK 1 2010 – Question 68 · KROK (Medicine) · Biology
It is known that the gene responsible for development of blood groups according to AB0 system has three allele variants. If a man has IV blood group, it can be explained by the following variability form:
- A. Phenotypic
- B. Mutational
- C. Genocopy
- D. Phenocopy
- E. Combinative
Hint
Think about where the A and B alleles of a person with the fourth blood group come from, and whether the DNA sequence of the gene itself has to change.
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