What phenotypic trait would likely arise in an individual exhibiting co-dominance?

In the case of co-dominance, both alleles in a heterozygous individual are fully expressed, leading to a phenotype that distinctly showcases both traits without blending them. For example, in a situation where one allele is for red flower color and the other for white flower color, an offspring exhibiting co-dominance would display flowers that are both red and white, rather than a mix that appears pink. This clear distinction between the two traits is what sets co-dominance apart from other genetic interactions, such as incomplete dominance, where the traits would blend.

The correct answer reflects this concept because it emphasizes that both traits are distinctly present, allowing for a complete representation of each allele's phenotypic effect.