If father has A blood group and mother has B blood group. The offsprings of this couple can have blood groups

Options

A. A,B
B. B,AB
C. A,B,AB,O
D. A,B,O

Explanation

To determine the possible blood groups of the offspring from a father with blood group A and a mother with blood group B, we need to consider the genotypes of the parents and how they can combine.

### Step-by-Step Solution:

1. **Identify the Genotypes of the Parents:**
- The father has blood group A. This can be either homozygous (AA) or heterozygous (AO).
- The mother has blood group B. This can also be either homozygous (BB) or heterozygous (BO).

2. **Case 1: Both Parents are Homozygous**
- If the father is homozygous (AA) and the mother is homozygous (BB), the possible genotype of the offspring will be:
- Cross: AA (father) x BB (mother)
- Offspring: All offspring will be AB (genotype IaIb).
- Possible blood group: AB.

3. **Case 2: Both Parents are Heterozygous**
- If the father is heterozygous (AO) and the mother is heterozygous (BO), the possible combinations of alleles can be determined using a Punnett square:
- Cross: AO (father) x BO (mother)
- Possible offspring genotypes:
- IAIB (AB)
- IAiO (A)
- IBiO (B)
- ii (O)
- Possible blood groups: A, B, AB, and O.

4. **Conclusion:**
- Depending on whether the parents are homozygous or heterozygous, the offspring can have the following blood groups:
- If both parents are homozygous: Only AB.
- If both parents are heterozygous: A, B, AB, and O.

### Final Answer:
The offspring of a father with blood group A and a mother with blood group B can have blood groups A, B, AB, and O, depending on the genotypes of the parents.

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