Two Tubes Are Inoculated from One Test Tube of a Bacterial

question 27

Multiple Choice

Two tubes are inoculated from one test tube of a bacterial culture.The cultures are then transferred every day for 2 months.All of the media and growth conditions are the same in every tube.After 2 months of cultivation,the fitness and genotype frequencies of the populations in the two tubes are compared.The fitness of the two cultures is the same,but the genotype frequencies are very different in the two cultures.How is this possible?

• A) Two months is not long enough for different fitness levels to evolve even if the genotype frequencies change.
• B) This result is not possible because different genotype frequencies would result in different fitness levels under the same growth conditions.
• C) Natural selection caused the evolution of different genotype frequencies within the separate test tubes.
• D) Genetic drift within the small populations in the test tubes resulted in different genotype frequencies.

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Definitions:

Milgram Experiment

A psychological experiment conducted by Stanley Milgram in the 1960s to study obedience to authority, where participants were instructed to administer electric shocks to another person.

Stanford University Prison Experiment

A psychological study conducted by Philip Zimbardo in 1971 at Stanford University, where students were assigned roles of prisoners and guards to explore the effects of perceived power.

Generalization

Drawing a conclusion about a certain characteristic of a population based on a sample from it.

Logical Support

The provision of reasons or evidence to justify a claim or argument.