Cross between parents of blood group AB and O will result the offspring having blood groups

Options

A. A
B. AB
C. O
D. A&B

Answer

To solve the question regarding the blood groups of offspring resulting from a cross between parents with blood groups AB and O, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Genotypes of the Parents**:
- The parent with blood group AB has the genotype IAIB (where IA represents the A antigen and IB represents the B antigen).
- The parent with blood group O has the genotype ii (where 'i' represents the absence of A and B antigens).

2. **Set Up a Punnett Square**:
- To determine the possible blood groups of the offspring, we can use a Punnett square. The alleles from the AB parent (IA and IB) will be placed on one side, and the alleles from the O parent (i) will be placed on the other side.

3. **Fill in the Punnett Square**:
- The combinations from the Punnett square will be:
- From IA (A antigen) and i (O antigen): IAi (Blood group A)
- From IB (B antigen) and i (O antigen): IBi (Blood group B)

4. **Determine the Possible Blood Groups of Offspring**:
- The offspring can have the following blood groups based on the combinations:
- IAi results in blood group A
- IBi results in blood group B

5. **Conclusion**:
- Therefore, the possible blood groups of the offspring from a cross between parents with blood groups AB and O are A and B.

### Final Answer:
The offspring will have blood groups A and B.