PPT-Speciation and Hardy Weinberg Equilibrium

General Information Biosphere Part of Earth where life exists including land water and air and atmosphere Ecosystem All organisms that live in a place together with the nonliving environment soil sun water etc . Falconer & Mackay, chapters 1 and 2. (1.5. , 1.6, 2.5, and 2.6). Sanja Franic. VU University Amsterdam 2011. 1.4. As an exercise in algebra, work out the gene frequency of a recessive mutant in a random-breeding population that would result in one-third of normal individuals being carriers.. Microevolution is a change in allele frequencies or genotype frequencies in a population over time. Genetic equilibrium in populations: the Hardy-Weinberg theorem. Microevolution is deviation from Hardy-Weinberg equilibrium. 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. Brian O. ’. Meara. EEB464 Fall . 2015. http://www.youtube.com/watch?v=lopTMhAbXoI. Initiation of speciation. Maintenance of current species. Prezygotic. Postzygotic. Zygote image © Laboratoire de Biologie de la Reproduction; Lausanne, image downloaded from . Gene and Genotypic frequencies. The Hardy Weinberg law states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.. .. Evolutionary Forces. Mutation (random). Genetic Drift (random). Gene Flow (random). Sexual Selection (non-random). Genetic Drift. Random, non-selective, changes in allele frequency due to chance. . weinberg. practice . Changes in allele frequencies. Turn in: Comparing AA WS and video notes. Homework. Chp. 20 reading and notes (Due Tuesday). Natural selection video and notes. Hardy-. weinberg. Species. – group of organisms that interbreed and produce fertile offspring. Subspecies. – groups that are on the way to being separate species; have started being genetically different. Individuals in the same species share a common gene pool. A population consists of 9% white sheep and 91% black sheep. If the black-wool allele is dominant and the white-wool allele is recessive, what is the frequency of the black-wool allele?. HARDY-WEINBERG WARM UP #2. Learning Goal: . To explore the factors leading to the evolution of a new species. . Success Criteria:. I know I am succeeding when I can… . define the concept of speciation. identify the modes of 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. Wilhem Weinberg. (1862 – 1937). Gregor Mendel. G. H. Hardy. (1877 - 1947). (1822-1884). Lectures 4-11: Mechanisms of Evolution (Microevolution). Hardy Weinberg Principle . (. Mendelian. Inheritance). Using mathematical approaches to calculate changes in allele frequencies…this is evidence of evolution.. Hardy-Weinberg equilibrium. Hypothetical, non-evolving population. preserves allele . frequencies. 129 Scientic Entropy, Medical Epidemiology and the Miasmic Literary City I On the 9th of June 1870, as he was crossing London’s Hyde Park, a young Thomas Hardy saw the announcement of the d