Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all F 1 individuals have red, axial flowers. The genes for flower color and location assort independently. Among the F 2 offspring, what is the probability of plants with white axial flowers?

3/16

Explanation:

Two true-breeding stocks of pea plants are crossed. One parent has red RR, axial flowers AA and the other has white rr, terminal flowers aa

Parent cross RRAA x rraa

Gamete: RA x ra

F1 gen. RrAa

Selfing of F1. RrAa x RrAa

F2 offspring

Rr x Rr Aa x Aa

RR Rr rr AA Aa aa

3/4 red 1/4 white 3/4 axial 1/4terminal

Probability of plants with white axial flowers is 1/4*3/4 = 3/16

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.