A girl riding a bicycle passes a boy on a sidewalk. How does the boy appear to be moving relative to the girl after she passed him.

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

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Twind is considered to be an abiotic factor because it.?