How are giraffes able to feed on an acacia tree despite the tree's long thorns? A. Giraffes don't eat acacia trees.
B. Giraffes have a long neck that they can maneuver between the thorns.
C. Giraffes have a long, mobile tongue that can maneuver between the thorns.
D. Giraffes produce saliva that dissolves the thorns.

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

Which of the following examples can cause gene flow between populations? a.an increase in predators to a population of zebra b.a volcanic eruption that kills half of a population of mice c.bird droppings that contain seeds from a different location d.a person that sprays a toxin on a group of mosquitoes

Which best describes a rhinovirus? o a. a virus that causes a common cold o b. a protective shell around a virus o c. a tube the comes off a virus o d. a piece of dna transferred by a virus