'Allopatric speciation' diaporamas de présentation

SBI3U Evolution Test Review--School Reach Questions

SBI3U Evolution Test Review--School Reach Questions. # Question Answer . 1 A scientific statement must be able to be this? Falsifiable (proven false) . 2 How do the fossils found deeper in the rocks compare with respect to complexity and age? Less complex and older .

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Lecture 3: The Origin of Species Campbell & Reece chapters: Chapter 24 Chapter 25: Pp. 522-527.

Lecture 3: The Origin of Species Campbell & Reece chapters: Chapter 24 Chapter 25: Pp. 522-527. Speciation - the origin of new species from pre-existing species. . What is a species? (Latin for kind, type). 1) Biological Species:

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What is a species?

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Biodiversity - Evolution L8

Biodiversity - Evolution L8. English in Natural Science ???????. Biodiversity. Diversity = variety of elements Biodiversity: multiplicity of species in nature Space - biogeography Habitat - ecology ? ecosystems Time - evolution ? speciation. Multicellular 540 m.y. Aquatic

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Species and Speciation, Pt. 2

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Process of Evolution

Process of Evolution. Outline. Evolution in a Genetic Context - Microevolution Hardy-Weinberg Causes of Microevolution Natural Selection Types of Selection Maintenance of Variations Speciation Modes of Speciation. Evolution in a Genetic Context. Microevolution

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Speciation: Last Lecture!!

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1 1 . Patterns of speciation and extinction

1 1 . Patterns of speciation and extinction. The rise and fall of biodiversity Four major mass extinctions of marine organisms: End of Silurian Devonian, Permian, and Cretaceous) Rise in diversity during Cambrian, Silurian, Cretaceous, and Paleogene. The rise and fall of biodiversity

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Speciation

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Micro to Macro Evolution

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EVOLUTION AND TAXONOMY REVIEW

EVOLUTION AND TAXONOMY REVIEW. EVOLUTION. IS A CHANGE IN FREQUENCY OF CERTAIN GENES IN A POPULATION MAY BE USED TO EXPLAIN THE DISAPPEARANCE OF A GENETIC TRAIT IS ALWAYS POSSIBLE RELATES MORE TO A POPULATION THAN A SPECIES. HOMOLOGOUS STRUCTURES. FORM DUE TO DIVERGENT EVOLUTION

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Speciation

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Evidence supporting theory of evolution

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Speciation, Reproductive Isolation, and Patterns of Evolution

Speciation, Reproductive Isolation, and Patterns of Evolution. AP Biology Evolution IV. Speciation. Species: a group of individuals capable of interbreeding Speciation: the formation of new species (3 main types) Allopatric Speciation Sympatric Speciation Adaptive Radiation.

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General Ecology: EEOB 404

General Ecology: EEOB 404. Evolutionary ecology: speciation and extinction. Topics for this class: Species richness of communities depends on both speciation and extinction processes Nature of speciation concepts, mechanisms Example: beetle herbivores & speciation on angiosperm plants

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Hardy-Weinberg equilibrium

Hardy-Weinberg equilibrium. if p = frequency of allele A q = frequency of allele a p + q = 1, ( p + q ) 2 = 1 p 2 + 2pq + q 2 = 1 if only law of probability affects the frequency w/ which gametes combine to form new individuals. Bisexual population

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Speciation

Speciation. Level 1 Biological Diversity Jim Provan. Campbell: Chapter 24. Modes of speciation. Reproductive barriers form boundaries around species and the evolution of these barriers is the key biological event in the origin of new species:

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Allopatric speciation 3 steps: (1) isolation (2) divergence (3) reproductive isolation

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Evolution Review

Evolution Review. Chapters 22-25. Chapter 22. Decent with Modification Natural selection Evidence that supports Natural Selection Direct observations Fossils Homology Biogeography. Chapter 22. Artificial selection Paleontology Vestigial structures Convergent evolution. Chapter 23.

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Biodiversity and Conservation

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