If the Bacterium Staphylococcus Aureus Experiences a Cost for Maintaining

question 27

Multiple Choice

If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, then what should happen in environments from which antibiotics are missing?

• A) These genes should continue to be maintained in case the antibiotics ever appear.
• B) These bacteria should be outcompeted and replaced by bacteria that have lost these genes.
• C) The bacteria should try to make the cost worthwhile by locating, and migrating to, microenvironments where traces of antibiotics are present.
• D) The bacteria should start making and secreting their own antibiotics.

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A less severe, less disruptive, and often shorter version of a manic episode.

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A condition characterized by the inability to feel pleasure in normally pleasurable activities, often associated with depression and other psychiatric disorders.

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