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PHYLOGENETIC TREES
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Phylogenetic Tree Example: An Oak Tree has roots and branches.
Phylogenetic tree has a common ancestor (roots) branches for more recent organisms. Phylogenetic tree is a visual way of organizing life and understanding relationships
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Trees are used to:
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1. To link classification and evolution
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2. Show divergence
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3. Estimate time of divergence
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4. Identify new traits
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5. Illustrate common traits
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Illustrate common traits
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Constructing a Phylogenetic Tree
1. Determine common trait ancestral trait 2. Determine organism that has no other shared trait….branch by itself…outgroup 3. Determine a trait that the rest of organisms have but not the original one 4. Continue separating remaining groups
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Now – Practice!
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