Lesson summary for:
Evo in the News: Grasshoppers change their tune. Is it evolution in action?
This news brief, from December 2012, describes new research into how traffic noise affects insect populations. Several hypotheses to explain the change in grasshoppers' songs are examined.
UC Museum of Paleontology
Use this resource to relate evolutionary concepts to the topic of animal behavior (or get more suggestions for incorporating evolution throughout your biology syllabus). This article includes a set of discussion and extension questions for use in class, as well as advanced discussion questions for undergraduates. It also includes hints about related lessons that might be used in conjunction with this one. Get more tips for using Evo in the News articles in your classroom.
- There is a fit between organisms and their environments, though not always a perfect fit.
- 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.
- Sexual selection occurs when selection acts on characteristics that affect the ability of individuals to obtain mates.
- Scientific knowledge is open to question and revision as we come up with new ideas and discover new evidence.
- Scientists test their ideas using multiple lines of evidence.
- Scientists may explore many different hypotheses to explain their observations.
- Our knowledge of the evolution of living things is always being refined as we gather more evidence.
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