1. | Mother is homozygous for ‘A’ blood group and father is heterozygous for ‘B’ |
2. | Mother is heterozygous for ‘A’ blood group and father is homozygous for ‘B’ |
3. | Both mother and father are heterozygous for ‘A’ and ‘B’ blood group, respectively |
4. | Both mother and father are homozygous for ‘A’ and ‘B’ blood group, respectively |