The genotype of blood group 'AB' 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 AB, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Blood Groups**: There are four main blood groups: A, B, AB, and O. Each blood group corresponds to specific genotypes.

2. **Identify Genotypes for Each Blood Group**:
- Blood Group A can have the following genotypes:
- I^A I^A (homozygous)
- I^A i (heterozygous)
- Blood Group B can have:
- I^B I^B (homozygous)
- I^B i (heterozygous)
- Blood Group AB has a unique genotype:
- I^A I^B (heterozygous)
- Blood Group O has the genotype:
- ii (homozygous recessive)

3. **Focus on Blood Group AB**: The only genotype that results in blood group AB is I^A I^B. This means that an individual with blood group AB has one allele for A (I^A) and one allele for B (I^B).

4. **Conclusion**: Therefore, the genotype for blood group AB is I^A I^B.

### Final Answer:
The genotype of blood group AB is **I^A I^B**.

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