I need help im not good with science

In familial hypercholesterolemia individuals homozygous for the allele causing the disorder completely lack receptors on liver cells that take up cholesterol from the blood stream. heterozygous have one-half the number of receptors while individuals homozygous for the normal allele are phenotypically normal. this is an example of a.epistasis b.complete dominance c. incomplete dominance d. codominance

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.