Why Did the Researchers Conduct Serial Transfers in the Experiment

Multiple Choice

Why did the researchers conduct serial transfers in the experiment illustrated in the figure?

A) Each serial transfer decreased the population size so that genetic drift could occur.
B) Each serial transfer was necessary to reintroduce RNA into the system.
C) Because the experiment took place in a lab, serial transfers were necessary so that the researchers could go home at night.
D) Each serial transfer is equivalent to a generation and thus provided an opportunity to study natural selection over time.