If 30% of the bases in a particular DNA molecule are guanine (G), calculate the percentage of the bases would be thymine (T). Explain your reasoning.

20%

Explanation:

Because if 30% is G then 30% is C cytosine (because G and C bond together in the DNA) which added together gives 60%. Which subtracted from 100% is 40% that is divided between 2 that gives 20% to represent the other two bases T and A.

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.

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