You radioactively labeled a red blood cell so that you could monitor its path through the heart. You see the labeled RBC in the right ventricle. Moments later, you see it in the aorta. How many heart valves must the labeled RBC have passed through during the monitoring

it is a

explanation:

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

yes, because even though a theory has a  lot of evidence to support it, it is not always true

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )