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Reproductive isolation

AP bio chapter 24 outline notes

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Biology
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Biology
Ecology
Philosophy of biology
Speciation
Evolutionary biology
Scientific classification
Allopatric speciation
Sympatry
Reproductive isolation
Species problem
On the Origin of Species
Species
Environment

CHAPTF,F.24 THE ORIGIN OF SPECIES OUTLII\E L What Is a SPecies? A. The biological species concept emphasizes reproductive isolation B. prezygotic and postzygotic barriers isolate the gene pools of biological species C. The biological species concept does not work in all situations D. Other species concepts emphasize features and processes that identiff and unite species members II. Modes of SPeciation A. Geographical isolation can lead to the origin of species: allopatric speciation B. A new species can originate in the geographical midst of the parent species: sympatric sPeciation c. Genetic change in populations can account for speciation D. The punctuated equilibrium model has stimulated research on the tempo of speciation The Origin of Evolutionary NoveltY

Chapter 24 The Origin of Species
Lecture Outline

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Biology
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Biology
Evolutionary biology
Philosophy of biology
Speciation
Ecology
Population genetics
Scientific classification
Allopatric speciation
Sympatry
Sibling species
Evolution
Reproductive isolation
Environment

Chapter 24 The Origin of Species Lecture Outline Overview: That ?Mystery of Mysteries? Darwin visited the Gal?pagos Islands and found them filled with plants and animals that lived nowhere else in the world. He realized that he was observing newly emerged species on these young islands. Speciation?the origin of new species?is at the focal point of evolutionary theory because the appearance of new species is the source of biological diversity. Microevolution is the study of adaptive change in a population. Macroevolution addresses evolutionary changes above the species level. It deals with questions such as the appearance of evolutionary novelties (e.g., feathers and flight in birds) that can be used to define higher taxa.
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