In case of codominance product is _____ .

Options

A. produced from both the alleles
B. produced from one allele
C. incompletely produced from both alleles
D. none are functional

Answer

**Step-by-Step Solution:**

1. **Understanding Co-dominance**: Co-dominance is a genetic phenomenon where both alleles in a heterozygous organism are fully expressed, resulting in a phenotype that is a combination of both traits. Unlike incomplete dominance, where the traits blend, co-dominance results in both traits being distinctly visible.

2. **Identifying the Product**: In the case of co-dominance, the product refers to the phenotypic expression of the alleles. Since both alleles are expressed, the product is a phenotype that shows characteristics of both alleles.

3. **Example of Co-dominance**: A classic example of co-dominance is the ABO blood group system. In this system, individuals with genotype IAIB express both A and B antigens on the surface of their red blood cells, resulting in blood type AB. Another example is the MN blood group, where individuals can express both M and N antigens.

4. **Conclusion**: Therefore, in the case of co-dominance, the product is the simultaneous expression of both alleles, leading to a phenotype that showcases both traits distinctly.

**Final Answer**: In case of co-dominance, the product is the simultaneous expression of both alleles.

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