PPT-Speciation through Natural Selection

Create a series of diagrams that show the 3 steps of speciation detailing how adaptation includes the proces s of natural selection for Utenstil beaked hornetbirds Population Separation . Speciation—Drift. Drift is important in evolution. Just because an allele is common doesn’t mean selection favored it. Speciation via drift?. Probably not.. Flies in . allopatry. , same environment never . Patterns of Evolution. Credits: 4. External. ! Before we begin…. From the . examination specifications…. Giraffe Evolution?. Revision. 12 bio stuff…. Stuff u should know from Year 12. Natural Selection. 8.7. Starter. What is speciation?. The evolution of new species from existing species.. Learning Objectives. Define speciation. Describe geographical isolation. Explain how geographical isolation can lead to the formation of new species. FIFTH EDITION. CHAPTER. . 19. Speciation and the Origins. Of Biological Diversity. © . 2012 W. W. Norton & Company, Inc.. Anu Singh-Cundy • Michael L. Cain. Cichlid Mysteries. Earth’s changes separate populations of organisms, alter the environments in which they live, and set the stage for evolution. EVOLUTION #1 (Group 3). Strawberry Frogs Forever. Participants: Lin Xiang. Ingo . Schlupp. Tiffany Roberts. Anne . Grippo. Jerry Farris. Facilitators: Brooke . Species & Speciation. Speciation. Gradual process in which one population separates from another.. AND builds up enough genetic differences to become a new species.. CONTENT SUMMRY:. Species & Speciation.. I. Species Definitions. Species represent the boundary for the spread of alleles . and define the unit in which the modes of evolution operate. Biological Species Concept. Individuals belong to the same species if they can interbreed with each other. Concept 22.2: Speciation can take place with or without geographic separation. Speciation can occur in two ways. Allopatric speciation. Sympatric speciation. Allopatric (. “. Other Country. ”. ) Speciation. A. Species overproduce offspring that may survive an environment.. B. There is little variation among members of a population.. C. Competition for resources, mates, and space among species leads to a struggle to survive.. TELEMATICS 2016. PAGE 14. Jean–. Baptista. Lamarck (1744-1829) . Lamarck used two ‘laws’ to explain evolution .  . ‘Law’ of use and disuse . – the more an organism uses a muscle or an organ the stronger the muscle or organ will developed . Gene Pool. All the alleles present in the reproducing members of a population at a given time.. The gene pool is constantly changing. Mutations add new alleles to the population. Immigration also adds new alleles; changes the allele frequency. I. Species Definitions. Species represent the boundary for the spread of alleles . and define the unit in which the modes of evolution operate. Biological Species Concept. Individuals belong to the same species if they can interbreed with each other. Chapter 11 Biology Textbook. KEY CONCEPT . Hardy-Weinberg equilibrium provides a framework for understanding how populations evolve.. . Hardy-Weinberg equilibrium describes populations that are not evolving. . Chapter 18 EVOLUTION AND THE ORIGIN OF SPECIES. PowerPoint Image Slideshow. This work is licensed under a . Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. .. Darwin and natural selection.