Despite the fact that it is the result of recessive genes,some carriers of sickle-cell disease possess both normal and sickle-shaped blood cells.This phenomenon is best explained by

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Incomplete dominance occurs when the heterozygous phenotype is an intermediate blend of the two homozygous phenotypes. In the case of sickle-cell disease, carriers with both normal and sickle-shaped blood cells have an intermediate phenotype because they only have one copy of the sickle cell gene. This results in some normal blood cells and some sickle-shaped blood cells.

Despite the Fact That It Is the Result of Recessive