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Lesson summary for:
Battling bacterial evolution: The work of Carl Bergstrom

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Overview:
This research profile examines how the scientist Carl Bergstrom uses computer modeling to understand and control the evolution of antibiotic resistant bacteria in hospitals.

Author/Source:
UC Museum of Paleontology

Grade level:
9-12

Time:
30-40 minutes

Teaching tips:
This research profile includes discussion and essay questions that can be assigned to students. Get tips for using research profiles in your classroom.

Concepts:
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details.

  • Evolution results from selection acting upon genetic variation within a population. (LS4.B)

  • Traits that confer an advantage may persist in the population and are called adaptations. (LS4.B, LS4.C)

  • Inherited characteristics affect the likelihood of an organism's survival and reproduction. (LS4.B, LS4.C)

  • Natural selection acts on the variation that exists in a population. (LS4.B, LS4.C)

  • Over time, the proportion of individuals with advantageous characteristics may increase (and the proportion with disadvantageous characteristics may decrease) due to their likelihood of surviving and reproducing. (LS4.B, LS4.C)

  • A hallmark of science is exposing ideas to testing. (P3, P4, P6, P7)

  • Scientists test their ideas using multiple lines of evidence. (P6, NOS2)

  • Scientific knowledge is open to question and revision as we come up with new ideas and discover new evidence. (P4, P6, NOS3)

  • The real process of science is complex, iterative, and can take many different paths.

  • Scientists use multiple research methods (experiments, observational research, comparative research, and modeling) to collect data. (P2, P3, P4, NOS1)

  • Science is a human endeavor. (NOS7)

  • As with other scientific disciplines, evolutionary biology has applications that factor into everyday life.

  • Natural selection is dependent on environmental conditions.

Teacher background:

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