13.1: Patterns of Human Variation - online
- Page ID
- 138554
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Patterns of Human Variation: Online
Human diversity
Supplies Needed
- Google Slides Patterns of Human Variation presentation (template provided here)
Readings
Introduction
Steps
- Students should be introduced to patterns of human variation ahead of time, either in class and/or through reading (e.g. Explorations Chapter 13). Terms and concepts that are important to define include: polymorphism, continuous variation, cline (or clinal distribution), and non-concordance.
- Instructors can make a copy of the Google Slides provided. Instructors can then share with students a link to the copy of the Google sides. Instructors should change the “Share” settings to provide their students with “editor” access.
- Each student selects a silhouette on the “height” slide (the first silhouette slide). Any silhouettes not selected can be deleted from the height slide and all following slides, or can be selected and moved around by the instructor.
- For the “height” slide (the first silhouette slide), students should be instructed to move their silhouettes around to organize them from shortest (left) to tallest (right), based on the height written on the silhouette. Students can click and drag, or use arrows, to move their silhouettes.
- Once students have arranged their silhouettes, they should be advised to look at which silhouettes they are next to, and watch future slides to see if their silhouette regularly ends up next to the same members of the population, or different ones.
- The class should then proceed to the next trait. For discrete traits like blood types, silhouettes are to be sorted into the provided boxes that correspond with the silhouette’s phenotype (e.g. blood type A, B, AB, or O).
- Work through all the trait slides, encouraging students to think about which silhouettes they are grouped near each time and noting if they are always with the same individuals or different ones.
Conclusion
- Polymorphism,
- Continuous variation,
- Clinal distribution,
- Non-concordance of traits, and
- Genetic diversity Is greater within-group than between-groups.