What is incomplete dominance?

Incomplete dominance refers to a genetic situation where the phenotype of the organism is a blended expression of both alleles involved in a heterozygous condition. In this context, neither allele is fully dominant over the other, leading to an intermediate phenotype that reflects characteristics of both alleles.

For example, if one allele represents red flower color and another represents white flower color, the resulting phenotype in a plant with one of each allele would be pink flowers. This blending of traits stands in contrast to complete dominance, where one allele would completely overshadow the other. Therefore, the key aspect of incomplete dominance is that it produces a mixed phenotype instead of a fully dominant one.