Answer:
A black chicken and a white chicken produce speckled offspring.
Explanation:
A codominance can be defined as a situation in which heterozygous organisms express both alleles of a gene at the same time. In these situations, relationships of dominance and recessiveness are not perceived, as both alleles express themselves fully.
Another characteristic of codominance concerns the phenotype. In situations of dominance and recessivity, we observe two phenotypes, as it presents heterozygotes or phenomena of the dominant type. However, in the case of codominance, the heterozygote phenotype is distinct from that observed in homozygotes.
