The dominance of a trait is tested over at least 3 generations. In the above discussed situation, data from only two generation is given. Hence, it cannot be concluded which blood type is dominant.
- The A, B, and ABO blood groups are dominant in human genetic characteristics, while the O blood group is recessive.
- However, in the example above, we are unable to determine which blood group is dominant.
- Genotypes would be homozygous AA or heterozygous AO if the father’s blood group is A.
- Women with blood group O would have homozygous OO genotypes and heterozygous AO genotypes.