Which mode of inheritance results in both alleles being detected equally in the heterozygous phenotype? a) codominance b) complete dominance c) incomplete dominance d) epistasis incomplete e) penetrance.

a) codominance

Explanation:

Codominance occurs when both the alleles of a gene are expressed equally in heterozygous genotype. Here, none of the alleles of a gene masks the expression of the other. It is one of the deviations of Mendel's law of dominance and gives three different phenotypes in the F2 generation of a monohybrid cross.

For example, ABO blood type in humans is regulated by three alleles of a gene. The alleles I^A and I^B are codominant and are equally expressed in the genotype I^AI^B.