11. Which of these claims is most likely true of two species that share a recent common ancestor? A. The two species have different developmental patterns.
B. The two species share DNA sequences.
C. The two species have similar arms and legs.
D. The ancestors of each species looked very different.

B. The two species share DNA sequences.

Explanation:

Although we can use all of these, DNA supports the determination of common acestory the best.

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.