Phylogeny and Systematics 1

Phylogeny and - Phylogeny and Systematics 1 Microevolution Evolution within a population or species generational timescale Macroevolution Evolution

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Phylogeny and Systematics 1 Microevolution - Evolution within a population or species; generational timescale - Macroevolution - Evolution across species; geological timescale - Systematics: The study of biological diversity and its origins/history - Goal: Reconstruct evolutionary history of life - Problem: Cannot observe evolutionary history - Solution: Infer history using deductive logic - How: Phylogenetic analysis Phylogenetic Tree - Phylogeny: Pattern of lineage branching that represents the evolutionary history of organisms - Phylogenetic tree is a hypothesis based on all of the available evidence (data) What Are Phylogenies Based On? - Based on shared derived characters - Synapomorphy - Synapomorphies obtained from types of data: - fossil record
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- morphological - molecular/genetic - behavior - ecological Methods in Fossil Aging - Radioactive Decay of Rocks - Fossils and surrounding rock assayed for radioactive material - Look at ratio between parent atoms and daughter atoms to determine how old the rock is. - Three Kinds of rock:
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This note was uploaded on 09/21/2011 for the course BSC 2010 taught by Professor Bowes during the Spring '08 term at University of Florida.

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Phylogeny and - Phylogeny and Systematics 1 Microevolution Evolution within a population or species generational timescale Macroevolution Evolution

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