Joy has a dna sample from each of five unknown animals. she wants to find the molecular mass of each sample to determine which sample belongs to which animal. which method should she use?
a. gel electrophoresis of the dna samples
b. transformatiion of different e. coli strains using the dna samples
c. paper chromatography of the dna samples

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.

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation: