An example of the Red Queen hypothesis, the sexual population of Mexican Poeciliid fish is able to keep up with a changing environment, while the asexual populations are not as successful. From Evolution: "Why Sex?" Video length: 4 min. 12 sec. Includes background reading material and discussion questions.

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Concepts

behavior, reproduction

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Additional Tags

asexual, coevolution, sex, sexual, b.e.1.e sexual selection, pbs learningmedia: the red queen, teachers' domain, wgbh, the red queen, sexual selection

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Classroom Considerations

Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
The intended use for this resource is Instructional|practice

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