The region of a sound wave where particles are tightly packed together

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

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Vessels draining the myocardium of the heart, open primarily ,into which chamber?