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Unformatted text preview: Week 1: • tree concepts • building trees • interpreting trees Weeks 2-3: • rooting the tree of life • Bacteria • Archaea BIS2C W2012 Lecture 1 (9 January 2012) 2 Week 4: • unicellular eukaryotes Weeks 4-6: • plants Weeks 7-8: • fungi Weeks 8-11: • animals Week 11 • closing lecture: tree of life revisited Tree terminology and concepts Phylogenies and trees . Explanation of term taxon (plural: taxa ). Different ways of drawing trees. Trees and speciation: a tree is a simplified model of the multiplication and divergence of species. Some more tree terminology: terminal (or tip) taxa – the taxa at the tips of the tree; usually these are the only taxa directly observed internal nodes – hypothetical ancestral taxa internal branches – branches connecting internal nodes root or root node – the common ancestor of all taxa in the tree Branches can be rotated about nodes without changing the meaning of the tree....
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This document was uploaded on 03/12/2012.
- Spring '08