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Overview: This activity uses a simple puzzle to get students to use cladistic thinking without bogging them down with terminology.Author/Source: American Biology Teacher Grade level: 9-12 Time: 30-50 minutes Teaching tips: This is a great introductory activity for a unit on phylogenetic. Concepts: Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details. - An organism's features reflect its evolutionary history.
- Similarities among existing organisms provide evidence for evolution. (LS4.A)
- Anatomical similarities of living things reflect common ancestry. (LS4.A)
- Evolutionary trees (i.e., phylogenies or cladograms) portray hypotheses about evolutionary relationships.
- Not all similar traits are homologous; some are the result of convergent evolution.
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