Flexi Says: Mendelian inheritance refers to the inheritance of traits controlled by a single gene with two alleles, one of which may be dominant to the other. But incomplete dominance and codominance inheritance do not show any specific dominant and recessive trait. Incomplete dominance occurs when the phenotype of a heterozygote offspring is somewhere in between the phenotypes of both homozygous parents; a completely dominant allele does not occur. Codominance occurs when both alleles are expressed equally in the phenotype of the heterozygote.
