"Lec 15 - Phylogeny and Systematics" Principles of Evolution, Ecology and Behavior (EEB 122) The Tree of Life must be discovered through rigorous analysis. Genetic information is crucial because appearances can be deceiving, and species that look similar can prove to be genetically very dissimilar and not share recent common ancestors. Two criteria, used to determine what the "correct" Tree is, are simplicity and whether the tree maximizes the probability of observing what we actually see. 00:00 - Chapter 1. Introduction 04:30 - Chapter 2. Grouping by Common Ancestry 15:11 - Chapter 3. Misleading Analogies 24:43 - Chapter 4. The Process of Phylogenetic Grouping 35:04 - Chapter 5. The Logic of Grouping by Shared Characteristics 42:56 - Chapter 6. Summary Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2009.
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Channels: Ecology
Tags: evolution Phylogenetics tree of life life history synapomorphy relationships convergence divergence paraphyly polyphyly homology analogy traits mammals reptiles
Uploaded by: yaleevoeco ( Send Message ) on 02-09-2012.
Duration: 43m 35s
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Lec 1 - The Nature of Evolution: Selection, Inheritance, and History
Lec 2 - Basic Transmission Genetics
Lec 3 - Adaptive Evolution: Natural Selection
Lec 4 - Neutral Evolution: Genetic Drift
Lec 5 - How Selection Changes the Genetic Composition of Population
Lec 6 - The Origin and Maintenance of Genetic Variation
Lec 7 - The Importance of Development in Evolution
Lec 8 - The Expression of Variation: Reaction Norms
Lec 11 - Life History Evolution
Lec 14 - Species and Speciation
Lec 16 - Comparative Methods: Trees, Maps, and Traits
Lec 17 - Key Events in Evolution
Lec 18 - Major Events in the Geological Theatre
Lec 19 - The Fossil Record and Life's History
Lec 21 - Evolutionary Medicine
Lec 22 - The Impact of Evolutionary Thought on the Social Sciences
Lec 24 - Climate and the Distribution of Life on Earth
Lec 25 - Interactions with the Physical Environment
Lec 26 - Population Growth: Density Effects
Lec 27 - Interspecific Competition
Lec 28 - Ecological Communities
Lec 29 - Island Biogeography and Invasive Species
Lec 30 - Energy and Matter in Ecosystems
Lec 31 - Why So Many Species? The Factors Affecting Biodiversity
Lec 32 - Economic Decisions for the Foraging Individual
Lec 33 - Evolutionary Game Theory: Fighting and Contests
Lec 34 - Mating Systems and Parental Care