Why Was It Necessary to Do Serial Transfers in the Experiment

question 19

Multiple Choice

Why was it necessary to do serial transfers in the experiment illustrated above?

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

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Definitions:

Extinction

refers to the process by which a species, genus, or family of organisms ceases to exist through death or inability to reproduce in its environment.

Overexploitation

When the number of individuals taken from a wild population is so great that the population becomes severely reduced in numbers.

Alien Species

Species that have been introduced to an area where they do not naturally occur, often resulting in harm to the native ecosystem.

Diffuse Energy

Energy that is spread out rather than concentrated, often referring to solar energy received by the Earth's surface which is dispersed over a wide area.