@Lecture08_4

@Lecture08_4 - 1 PALEOBIOLOGY 1 Fall 2009, GEL 107: Lecture...

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Unformatted text preview: 1 PALEOBIOLOGY 1 Fall 2009, GEL 107: Lecture 07 Phylogeny Reconstruction 2 Phylogenetic Tree Phylogenetic Hypothesis Phylogram ladogram, ML tree, NJ 3 Cladogram, ML tree, NJ tree (depending on the method) B is closer to A than to C or D + E + F B + A is closer to C than to D + E + F A F B C D E 4 A + B + C is the sister group of D + E + F Ancestor 2 h t b i t t i l i ? Why are family trees important? Questions What are basic tree terminologies? How do we use a tree to help group organisms together? What data and methods do we use to 5 compute a family tree? How does parsimony work? A family tree provides a framework for evolutionary discussions 6 7 Evolutionary stages 8 3 A B C D E D 9 A B C E h t b i t t i l i ? Why are family trees important? Questions What are basic tree terminologies? How do we use a tree to help group organisms together? What data and methods do we use to 10 compute a family tree? How does parsimony work? Node 11 5 Nodes Interode 12 5 Nodes 4 Internodes 4 erminal) dges) 13 Root 5 Nodes 4 Internodes 6 (External) Branches (Terminal) (Vertices) (Internal branches, Internal edges, stems) (Edges) Any Node is Rotatable 14 Any Node is Rotatable 15 Any Node is Rotatable 16 5 BUSH LADDER SYMMETRICAL PECTINATE 17 Unrooted Tree B is closer to A than to C + D A B D C B C 18 Ancestor A D Outgroup Outgroup A B C D B is closer to C + D than to A 19 Ancestor Derived Basal Sauropsid 20 Basal 6...
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@Lecture08_4 - 1 PALEOBIOLOGY 1 Fall 2009, GEL 107: Lecture...

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