To determine the possible blood types of the children from a mother with heterozygous type A blood (genotype IAi) and a father with heterozygous type B blood (genotype IBi), we can use a Punnett square to visualize the potential combinations of their alleles.
The mother can pass on either the IA (A) allele or the i (O) allele, while the father can pass on either the IB (B) allele or the i (O) allele. So, the possible combinations of alleles from the parents are:
- Mother: IA, i
- Father: IB, i
The combinations from these alleles would be:
- Child 1: IAIB (Type AB)
- Child 2: IAi (Type A)
- Child 3: IBi (Type B)
- Child 4: ii (Type O)
Thus, the potential blood types for their children could be:
- Type A
- Type B
- Type AB
- Type O
In summary, the children of a heterozygous type A mother and a heterozygous type B father can have any of the four blood types: A, B, AB, or O.