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Lesson summary for:
Evo in the news: Livestock kick a drug habit

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Overview:
This news brief, from September of 2005, describes the FDA ban on the use of the antibiotic Baytril in poultry production. The decision was made in order to reduce the danger presented by the evolution of antibiotic resistant bacteria.

Author/Source:
UC Museum of Paleontology

Grade level:
9-12

Time:
10 minutes

Teaching tips:
This article could be used to motivate discussions of natural selection. It also includes a set of discussion and extension questions, as well as links to related lessons that might be used in conjunction with this one. Get more tips for using Evo in the News articles 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)

  • Mutations are random.

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

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

Teacher background:

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