Explains inheritance resulting in two dominant alleles being expressed in the offspring, with neither trait being masked.

Codominance

Explanation:

Codominance is a type of inheritance where both alleles are expressed simultaneously. Alleles most times are not always fully dominant to each other, but in codominance, the two alleles for a trait are both dominant. In codominace non of the allele can mask the trait of another allele, and the two alleles are always expressed in the offspring.

From the question, we can now say that the codominace explains inheritance resulting in two dominant alleles being expressed in the offspring, with neither trait being masked.