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Most popular model of speciation: allopatric speciation ... Polyphyletic - does not include the most recent. common ancestor of the species ...
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First part genus name, second part specific epithet ... Genus: Haliaeetus. Species: leucocephalus. Any unit' in the classification is a taxon (pl. ...
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The Origin of Species Species Biological Species Ring Species Barriers Prezygotic Habitat Isolation Behavior Isolation Temporal Isolation Mechanical Isolation Gametic ...
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The Origin of Species Macroevolution Biological Species Concept Prezygotic Barriers Postzygotic Barriers Modes of Speciation Ring Species in Progress?
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... producing viable offspring Reproductive Barriers Prezygotic reproductive isolation ... but did not present a mechanism Jean-Baptiste Lamarck Lamarck published ...
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Speciation 2 Postzygotic reproductive isolation Barriers in allopatric speciation Haldane s rule Sympatric speciation Another case of prezygotic reproductive ...
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Mussel Hybridization. mtDNA introgression blocked - nuclear-cytoplasmic genetic ... Mussel Hybrid Zone: - bimodal due to a combination of prezygotic ...
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... By definition speciation involves reproductive isolation: ... after they have formed Prezygotic ... Common mechanism of speciation in flowering ...
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Prezygotic isolating mechanisms are those that prevent breeding between members ... gametic isolation it is possible that the gametes will not form a zygote ...
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Geographic populations: fully compatible ... prezygotic isolation: mate choice. D = time since divergence (clock) lots of scatter ...
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Geographic populations: fully compatible ... prezygotic isolation: mate choice. D = time since divergence (clock) lots of scatter ...
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... Prezygotic barriers impede mating or hinder fertilization if mating does occur Individuals of different species Mating attempt Habitat isolation ... mechanism for ...
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Speciation Ch 14 What is a species Numerous definitions Biological Species Concept Morphological Species Concept Ecological Species Concept Phylogenic Species Concept ...
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Title: Evolution of Species Author: COMPAQ CUSTOMER Last modified by: SDUHSD Created Date: 5/19/2005 6:46:07 AM Document presentation format: On-screen Show
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Title: PowerPoint Presentation Author: Carol Leibl Last modified by: bbailey Created Date: 9/8/2006 5:08:08 PM Document presentation format: On-screen Show (4:3)
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The Origin of Species Chapter 24 Biology Campbell Reece What is a species? Biological species concept: Reproductive isolation What is a species?
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Allopatric speciation: Polar bears and Brown bears ... Brown, less streamlined, omnivorous, hibernating. Finches of the Galapagos Islands ...
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Chapter 17 Speciation
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Title: Wednesday, September 5 Last modified by: pbishop Created Date: 8/16/2006 12:00:00 AM Document presentation format: On-screen Show (4:3) Other titles
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CHAPTER 13 OUTLINE What is macroevolution? 1. big evolution 2. major changes in fossil record What is the Biological Species Concept? some exceptions?
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Title: Wednesday, September 5 Last modified by: pbishop Created Date: 8/16/2006 12:00:00 AM Document presentation format: On-screen Show (4:3) Other titles
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... 2 First proposed by Ernst Mayr and later adopted by Stephen Jay Gould Both liked it because they believed that speciation might be rapid in small populations ...
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Chapter 24 The Origin of Species Question? What is a species? Comment - Evolution theory must also explain how species originate. Two Concepts of Species ...
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Discuss patterns observed in evolution. Describe factors that influence speciation. Compare gradualism with punctuated equilibrium. Review Vocabulary
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Animals are multicellular, heterotrophic, eukaryotes ... Keeled toucan. Linnaean Classification. Kingdom: Animalia. Phylum: Chordata. Subphylum: Vertebrata ...
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Correct answers for problem 6 on the population genetics problem set ... Gametic Isolation. The hybrid offspring of horse and donkey are viable but sterile ...
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The Origin of Species Chapter 24 Origin of Species How do we define species? A population of organisms that produces viable fertile offspring in nature.
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Origin of Species How do we define species? A population of organisms that produces viable fertile offspring in nature. When does this definition fall apart?
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Evolution Chapters 22,23,24
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Bottleneck examples. One real life example of a species being affected by the bottleneck effect is the northern elephant seal. Humans intensely hunted these animals ...
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Chapter 24: The Origin of species-Macroevolution = the origin of new taxonomic groups Speciation = origin of new species Anagenesis vs. Cladogenesis
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Chapter 24 The Origin of Species
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Today: Our First Presentations! Macroevolution Diversity! Onto Prokaryotes Meeting the Protists Overview of Fungi? The Major Fungi Groups The Zygomycetes Mycorrhizae ...
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Chapter 13 Natural Selection Stabilizing Selection Occurs when an intermediate, or average, phenotype is favored Improves adaptation of population to a stable ...
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What the heck is a Protist?!? Evolution of the Protistans Diversity of the Protistans 1. The Protozoans animal like protists Single-celled, ...
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Chapter 16: Evolution of Populations and Speciation 16-1 Variation of Traits in a Population 16-2 Disruption of Genetic Equilibrium 16-3 Formation of Species
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Title: Wednesday, September 5 Author: Peter Last modified by: Peter Created Date: 8/16/2006 12:00:00 AM Document presentation format: On-screen Show (4:3)
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Title: Chs. 14-16: Evolution Author: Brandon Spencer Last modified by: Box Elder School District Created Date: 2/4/2001 10:31:28 PM Document presentation format
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Topics: Speciation and Reproductive Isolation Patterns of Evolution Rates of Evolution Origin of Life
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Why are islands so ripe for Allop.& Symp speciation? A model for allopatric speciation within an island system: Isolation + Rare Dispersal (e.g. Founders) ...
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... sperm might not be able to travel to the ova Concept 24.1 Postzygotic ... A parasite may be defined by is adaptations to its host Concept 24.1 Pluralistic ...
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The Origin of Species Two basic patterns of evolutionary change can be distinguished Anagenesis Cladogenesis Origin of Species How do we define species?
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Fall 05 skip acclimitization Acclimatization effects on final rectal temperature, heart rate, and sweat rate, for a group of men exposed daily to 2 hr of hard work in ...
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Speciation. Species- Individuals capable of successful interbreeding and producing fertile ... Speciation: process by which new species come into being ...
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Chapter 14- Origin of Species Adaptive radiation Allopatric speciation Behavioral isolation Biological species concept Ecological species concept Gametic isolation
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MODELS OF SPECIATION Sympatric Speciation: Speciation without restriction to gene flow. Development of reproductive isolation without geographic barriers.
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Without this, fertilization does not occur. Rapid change of bindin proteins creates barriers to fertilization between species. Sea urchin bindin: ...
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Descent with Modification Theme: Evolutionary change is based on the interactions between populations & their environment which results in adaptations (inherited ...
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Fish diversity Laura (6) * Species richness in vertebrates Genome and biodiversity - Genome duplication and differential rediploidisation - Transposable elements ...
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Process of Evolution Chapter 18
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Chapter 16 Population Genetics and Speciation Variation of Traits In nature many quantitative traits in a population tend to follow a bell curve pattern Average (ex ...
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Egg laying wasp that eventually kills the cactus. Disruptive Selection. average trait value ... Black-bellied seed crackers (Pyrenestes) in Cameroon. Same ...
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Chapter 16: Population Genetics & Speciation Ch 16 will link the understanding of the theories of natural selection & evolution with principles of genetics.
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Chapter 16: Population Genetics and Speciation http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1001127 Reproductive Isolation: Can be caused by...
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EVOLUTION Ch 15 Notes Types of Natural Selection Stabilizing Directional Disruptive or diversifying Stabilizing Selection Average form of the trait has the highest ...
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