Some of the original strain of S.aureus bacteria surviving in the presence of methicillin is an example of which of the following?

Question

Quizplus · Accepted Answer

The survival of the original S. aureus strain in the presence of methicillin is an example of natural selection. Specifically, the bacteria that are resistant to methicillin (due to genetic mutations) are more likely to survive and reproduce, while those that are sensitive to the antibiotic are killed off. Over time, this can lead to an increase in the proportion of resistant bacteria in the population, representing an evolutionary shift.

Some of the Original Strain of S