Question

In the case of blood types, both alleles A and B may be expressed as the phenotype. This exemplifies:

Answer 1

Codominance

Step-by-step explanation:

Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.