If the Bacterium Staphylococcus Aureus Experiences a Cost for Maintaining

question 12

Multiple Choice

If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?

• A) These genes would be maintained in case the antibiotics appear.
• B) These bacteria would be outcompeted and replaced by bacteria that have lost these genes.
• C) These bacteria would try to make the cost worthwhile by locating and migrating to microenvironments where traces of antibiotics are present.
• D) The number of genes conveying antibiotic resistance would increase in these bacteria.

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