The expression of intermediate or blended features or traits in a heterozygous individual is referred to as incomplete dominance. In this genetic phenomenon, neither allele is completely dominant over the other, resulting in a heterozygous phenotype that is intermediate between the two homozygous phenotypes. For example, crossing two homozygous parents with contrasting traits can produce offspring with a blended trait, such as pink flowers from red and white parents or intermediate human traits like skin color or height
. Incomplete dominance is distinct from codominance, where both alleles are fully expressed simultaneously rather than blended. In incomplete dominance, the heterozygote shows a diluted or intermediate trait rather than expressing both traits equally
