'Sympatric speciation' presentation slideshows

Evolution

Evolution . Evolution and the Theory of Natural Selection . What is Evolution?. The change in gene frequencies in a population over time. Why the controversy?. Intelligent Design vs Evolution. The Greek philosopher Aristotle (384-322 BCE)

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Speciation and Macroevolution

Speciation and Macroevolution. Chapter 20. Learning Objective 1. What is the biological species concept ? List two potential problems with the concept. Biological Species Concept. Species one or more populations members interbreed in nature produce fertile offspring

1.19k views • 77 slides

Review:

Review: a change in genes (allele freq) that produces a phenotype that is favorable (increases fitness) in a particular environment leads to natural selection (survive or not in that env ) and thus Evolution!. Have out your Microevolution HW.

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As you come in,

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Lecture #11 Date ________

Lecture #11 Date ________. Chapter 24 ~ The Origin of Species. Today. Look at the definition of species How do new species arise What are ways organisms can be reproductively isolated Allopatric vs sympatric speciation Gradualism vs punctuated equilibrium. Reminder.

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Visualizing Speciation in Artificial Cichlid Fish

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POPULATION GENETICS, SELECTION AND SPECIATION

POPULATION GENETICS, SELECTION AND SPECIATION. CAPE BIOLOGY FEBRUARY 18, 2013 MRS. S. HAUGHTON. A population is a group of organisms of the same species usually found in a clearly defined geographical area.

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Chapter 24 The Origin of Species Part B

Chapter 24 The Origin of Species Part B. How do species occur? Concept 24.2: Speciation can take place with or without geographic separation. Speciation can occur in two ways: Allopatric speciation Sympatric speciation Both work through a block of gene flow between two populations.

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Detecting selection using genome scans

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What is a species?

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Lecture #11 Date ________

Lecture #11 Date ________. Chapter 24 ~ The Origin of Species. Today. Look at the definition of species How do new species arise What are ways organisms can be reproductively isolated Allopatric vs sympatric speciation Gradualism vs punctuated equilibrium. Reminder.

433 views • 33 slides

How Diversity Evolves

459 views • 31 slides

SPECIATION

SPECIATION. Ch. 16-3 pp. 326-330. Forming a new species. Speciation: forming a new species. Forming a new species. Speciation: forming a new species Species : a group of organisms that can mate and produce fertile offspring. Forming a new species. Speciation: forming a new species

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The Origin of Species

The Origin of Species. Speciation. Speciation is the process by which one species splits into two or more species Speciation explains the features shared between organisms due to inheritance from their recent common ancestor.

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Discussion of Ecological Speciation in South Atlantic Island Finches by

Discussion of Ecological Speciation in South Atlantic Island Finches by Peter G. Ryan, Paulette Bloomer, Coleen L. Moloney , Tyron J. Grant and Wayne Delport University of Cape Town University of Pretoria South Africa Science 315 :1420-1423 BIO101, Oct. 3, 2011.

364 views • 24 slides

LESSON # 23

LESSON # 23. THE OUTCOMES OF EVOLUTION:. Macroevolution. MICRO EVOLUTION. MACRO EVOLUTION. EVOLUTION. Any genetically based phenotype change in a population of organisms over successive generations.

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Fig. 24-5

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Chapter 24: The Origin of Species

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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.

211 views • 9 slides

Chapter 18.11

Chapter 18.11. Other Speciation Models. AP Biology Spring 2011. Sympatric Speciation. Sympatric speciation : is divergence within the same home range of a species. Sympatric Speciation.

150 views • 5 slides