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The top documents tagged [species concepts]
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species concepts
Species Concepts. Species in Theory and Practice Biologists have not been able to agree on exactly what a species is, or how species should be abstractly.
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Lecture 3: The Origin of Species Campbell chapters: Chapter 24 Chapter 25 Speciation - the origin of new species from pre-existing species.
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1 Dan Graur Molecular Phylogenetics. 2 Objectives of phylogenetics Reconstruct the correct genealogical ties among biological entities Estimate the time.
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Announcements: 1. Labs meet this week 2. Lab manuals have been ordered 3. Some slides from each lecture will be on the web 4. Study questions will be posted.
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BIOL2007 (B242) - BIODIVERSITY AND SPECIES Next lecture: how species evolve. Today: (1) nature of species (2) whether speciation differs from microevolution.
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LECTURE 8: Macroevolution. What is microevolution? –Evolution on a small scale –Change in allele frequencies from one generation to the next –A process.
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Robert Hanner, PhD Database Working Group Chair, CBOL Global Campaign Coordinator, FISH-BOL Associate Director, Canadian Barcode of Life Network Biodiversity.
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Introduction to the Consortium for the Barcode of Life (CBOL) Scott Miller Smithsonian Institution and Consortium for the Barcode of Life.
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Kingdoms and Domains
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Plant Speciation – Part 2 AD ABCEDF Spring 2010. Major topics Variation in plant populations and species (1) Gene flow and reproductive isolating barriers.
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Species Concepts. This idea goes all the way back to Darwin where he used visible “gaps” in morphology to delimit species. “I believe that species come.
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Speciation Darwin explained evolution, but didn’t do so well with speciation Natural selection causes change in a pop., but what causes pop. to split?
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