An individual heterozygous for sickle-cell disease produces both normal and abnormal polypeptides. This is an example of ____.
A) epistasis
B) incomplete dominance
C) polygenic inheritance
D) multiple alleles
E) pleiotropy

Question

Quizplus · Accepted Answer

Incomplete dominance occurs when the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes, as seen in sickle-cell disease where both normal and abnormal hemoglobin are produced.

An Individual Heterozygous for Sickle-Cell Disease Produces Both Normal and Abnormal