The possible genotype of blood group A heterozygous condition is:

Options

A. `I^(A)`i
B. `I^(A)I^(B)`
C. `I^(A)I^(A)`
D. ii

Answer

To determine the possible genotype of a blood group A heterozygous condition, we need to understand the genetics behind blood groups.

### Step-by-Step Solution:

1. **Understand Blood Group Alleles**: Blood groups are determined by three alleles:
- \( I^A \) (A allele)
- \( I^B \) (B allele)
- \( i^O \) (O allele)

2. **Identify Dominance and Co-dominance**:
- \( I^A \) and \( I^B \) are both dominant alleles.
- \( i^O \) is a recessive allele.
- \( I^A \) and \( I^B \) exhibit co-dominance when present together, resulting in blood group AB.

3. **Define Heterozygous Condition**:
- A heterozygous condition means having two different alleles for a trait. For blood group A, the heterozygous genotype would consist of one A allele and one O allele.

4. **Determine the Genotype for Blood Group A**:
- The possible genotype for blood group A in a heterozygous condition is \( I^A i^O \) (one A allele and one O allele).

5. **Evaluate the Options**:
- Option A: \( I^A i^O \) - This is the correct heterozygous genotype for blood group A.
- Option B: \( I^A I^B \) - This represents blood group AB, not A.
- Option C: \( I^A I^A \) - This represents a homozygous condition for blood group A.
- Option D: \( i^O i^O \) - This represents blood group O.

6. **Conclusion**:
- The possible genotype of blood group A in a heterozygous condition is \( I^A i^O \), which corresponds to Option A.

### Final Answer:
The possible genotype of blood group A heterozygous condition is **Option A: \( I^A i^O \)**.

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