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Overview: Phylogenetics has affected almost every area of biology - even the most basic one: how we classify organisms. Find out how phylogenetic classification works and what its advantages are. This article appears at SpringerLink. Author/Source: Evolution: Education and Outreach Grade level: 6-8 Time: 35 min Teaching tips: This article is written for teachers and comes with links to additional examples, supplementary information, and classroom tips. It is also available as a pdf at http://www.springerlink.com/content/k176638503p63017/fulltext.pdf Concepts: Through billions of years of evolution, life forms have continued to diversify in a branching pattern, from single-celled ancestors to the diversity of life on Earth today. Present-day life forms are descended from past life forms; all life is related. Classification is based on evolutionary relationships. Evolutionary relationships may be represented by branching trees (i.e. phylogenies or cladograms). Teacher background: Classification/Phylogenetics

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