In familial hypercholesterolemia, homozygous people with the abnormal gene have extremely high cholesterol, while heterozygous people have somewhat high cholesterol.  This type of inheritance is called

A) complete dominance.
B) incomplete dominance.
C) multiple alleles.
D) codominance.
E) sex-linked inheritance.

____ are alternative forms of a gene that govern the same feature, such as eye color, and occupy corresponding positions on homologous chromosomes.

A) Alleles
B) Loci
C) Homozygotes
D) Coupled traits
E) Heterozygotes