In codominance, .
a. the genotype is determined by the phenotype
b. the intermediate phenotype may be the result of enzyme insufficiency
c. the heterozygous phenotype is intermediate to the homozygous phenotypes
d. two alleles may be equally expressed e. one allele is dominant to another allele

In codominance, two alleles may be equally expressed (Option d)

Explanation:

In codominance, both alleles can be expressed. In these cases, heterozygote individuals instead of showing an intermediate phenotype, express both of the alleles. Their phenotype is an additive expression of their parents' genes.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

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