Scholars explore revolutionary relationships among organisms through phylogenetics. Using cladograms, or an evolutionary tree, the narrator shows viewers how organisms are created through morphological (analysis of number of heart chambers) and molecular data (DNA of metazoans). 

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CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas

  • Have a copy of the phylogenetic tree of life available for scholars to analyze through questions and discussions; identify domains, kingdoms, and organisms found within the tree
Classroom Considerations


  • Video fits best before the second video in this series on cladograms
  • 12th in a series of 18

  • Video provides a link for a concept map, slideshow, and one review worksheet
  • Utilizes high-quality diagrams and photographs

  • None
Common Core