Sickle-cell anemia is a characteristic involving incomplete dominance.Suppose that a person is heterozygous for this characteristic.What will be the state of his or her red blood cells?

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Incomplete dominance means that the phenotype of the heterozygous individual is a mixture of the two homozygous phenotypes. In the case of sickle-cell anemia, the homozygous dominant (normal) individual has round red blood cells while the homozygous recessive (sickle-cell) individual has sickle-shaped red blood cells. Therefore, the heterozygous individual will have a mixture of the two, meaning some normal round cells and some abnormal sickle-shaped cells.

Sickle-Cell Anemia Is a Characteristic Involving Incomplete Dominance