'Ring species' presentation slideshows

BIOE 109 Summer 2009 Lecture 11-Part II Speciation

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Chapter 17 Opener

Chapter 17 Opener. Figure 24.5 A summary of reproductive barriers between closely related species. Figure 24.6 Two modes of speciation. Figure 24.7 Allopatric speciation of squirrels in the Grand Canyon. Figure 24.8 Has speciation occurred during geographic isolation?.

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Internal controls of biogeographic patterns

Internal controls of biogeographic patterns. Objectives Explain how phenotypic diversity can enhance potential species diversity Compare and contrast allopatric, sympatric, ecological and reverse speciation Compare and contrast convergent, divergent and parallel evolution

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Species and Speciation

Species and Speciation. D. melanogaster. D. simulans. Species and Speciation I. Species Concepts. Species and Speciation I. Species Concepts How we define a species depends on the goal we have in mind. Species and Speciation I. Species Concepts

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CHAPTER 15 Species: Concepts & Origins

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SPECIES & SPECIATION

SPECIES & SPECIATION. (a) In your own words define what is the species? (b) What is speciation?. SPECIES & SPECIATION. The term " species " is used simultaneously for the unit of evolution & the unit of classification. It is a taxonomic category below genus. Species Classification.

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The Origin of Species

The Origin of Species. AP Biology Crosby High School. Reproductive Isolation. Prezygotic Barriers: Habitat Isolation: Parasites in different hosts Behavioral Isolation: Generally courtship rituals Temporal Isolation: Different time, day, season, or year

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