Chapter 19, Problem 2CBQ

Summary Introduction

To write:

How the random mutation, genetic drift, and natural selection may have contributed to the emergence of antibiotic-resistant strains.

Introduction:

Antibiotic-resistant microorganisms are not controlled or killed by the antibiotics. They are able to survive and multiply in the presence of antibiotics. Most infection-causing microorganisms can become resistant to some antibiotics. Antibiotic resistance occurs when microorganisms change in some way that eliminates or reduces the effectiveness of antibiotic drugs.