The issue of high cholesterol can sometimes run in families. If an individual has two normal alleles, then he is phenotypically normal. Individuals having both recessive alleles for this condition leads to zero production of receptors that remove cholesterol from blood. However, individuals who are heterozygous produce half the number of receptors necessary to remove cholesterol from the blood. This is a good example of

A) epistasis.

B) complete dominance.

C) incomplete dominance.

D) codominance.

In the case of the gene that determines high cholesterol in the blood, the two alleles express incomplete dominance.

What this means is that the dominant allele is not completely dominant over the recessive allele. If the allele was completely dominant, even one allele would be enough to determine the individual's trait as dominant. But in the case of incomplete dominance between the alleles, the heterozygous individuals that have one dominant and one recessive allele are an ''in between'' phenotype.

The answer would be incomplete dominance