Familial hypercholesterolemia illustrates incomplete dominance in humans because

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Familial hypercholesterolemia is caused by a mutation in the LDL receptor gene, leading to decreased uptake of cholesterol from the bloodstream. Heterozygotes for the disease have one mutated copy of the gene and one normal copy. This results in a reduced but still functional number of LDL receptors on their liver cells, leading to an intermediate level of cholesterol accumulation. This is an example of incomplete dominance, as the heterozygous phenotype is intermediate between the homozygous wild type and homozygous mutant phenotypes.

Familial Hypercholesterolemia Illustrates Incomplete Dominance in Humans Because