1. the situation in which alle frequencies in the gene pool of a population remain constant is called (a)evolution (b)genetic drift (c)genetic equilibirium (d)natural selection 2.the type of genetic drift that follows the colonization of a new habitat by a small group of individuals is called (a)the hardy-weinberg principle (b)the founder effect (c)directional selection (d)stabilizing selection

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

helicase, i think thats it