How many kinds of phenotypes would you expect in `F_(2)` generation in a monohybrid cross exhibiting co-dominance ?

Explanation

To determine how many kinds of phenotypes we would expect in the F2 generation of a monohybrid cross exhibiting co-dominance, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Co-dominance**: Co-dominance occurs when both alleles in a heterozygote are fully expressed, resulting in a phenotype that is neither dominant nor recessive. A classic example of co-dominance is the ABO blood group system in humans.

2. **Identify the Alleles**: In the ABO blood group system, the alleles are:
- IA (A blood type)
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