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Students observe that the banding patterns seen on stained chromosomes from humans and chimpanzees show striking similarities. Possible evolutionary relationships are explored, as are the chromosomes and relationships of other apes.
One to two class periods.
Students may need additional information about creating the phylogenetic tree in exercise 2.
Much of this activity would be appropriate for students to complete outside of the class setting.
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details.
- Present-day species evolved from earlier species; the relatedness of organisms is the result of common ancestry.
- Similarities among existing organisms (including morphological, developmental, and molecular similarities) reflect common ancestry and provide evidence for evolution.