The genotype of blood group 'B' is `

Options

A. `I^(A)I^(A)//I^(A)I^(O)`
B. `I^(B)I^(B)//I^(B)I^(O)`
C. `I^(A)I^(B)`
D. `I^(O)I^(O)`

Answer

To determine the genotype of blood group 'B', we need to understand the ABO blood group system and the genotypes associated with each blood type.

### Step-by-Step Solution:

1. **Understanding Blood Groups**: The ABO blood group system consists of four main blood types: A, B, AB, and O. Each blood type is determined by the presence or absence of specific antigens on the surface of red blood cells.

2. **Identifying Antigens**: Blood group B has the B antigen present on the surface of its red blood cells. This is crucial for determining the genotype.

3. **Genotype Representation**: The alleles for the ABO blood group are represented as follows:
- IA for blood group A
- IB for blood group B
- IO for blood group O

4. **Possible Genotypes for Blood Group B**:
- **Homozygous Condition**: If an individual has two alleles for blood group B, the genotype will be IB IB.
- **Heterozygous Condition**: If an individual has one allele for blood group B and one for blood group O, the genotype will be IB IO.

5. **Conclusion**: Therefore, the genotypes for blood group B can be:
- Homozygous: IB IB
- Heterozygous: IB IO

6. **Final Answer**: The correct answer for the genotype of blood group B is:
- Option B: IB IB (homozygous) and IB IO (heterozygous).