PPT-Theory of Evolution

THEORY OF EVOLUTION The theory of evolution is scientists explanation of how living things began Also called organic evolution LIVING ORGANISMS HAVE CHANGED GRADUALLY OVER TIME TO FORM NEW ORGANISMS THAT ARE MORE COMPLEX. Scientific Theory. Social use of the word “theory”. Not the same as in science. Implies a hunch or a casual guess. Scientific Theory. 1. Highly probable explanation based on vast collections of scientific data. Darwin’s legacy. Darwin’s Great Books. The Origin of Species (1859). The Descent of Man (1871). Principles of Evolution. Common ancestry: all species originated from one or a small number of ancient organisms.. Unit 6: Seventh Grade. Theory vs. Law. An idea that has . not. been proven to be unequivocally true. Examples:. Big Bang. The extinction of the dinosaurs. An idea or truth that . has . been proven to be unequivocally true. Sara Sawyer, Ross Conover, . and Mark James. 19 March 2013. Outline. Definition of Evolution. History of Evolutionary Thought. Evidence for Evolution. Evolutionary Misconceptions. Evolution and Religion. What do we use in order to determine evolutionary relationships?. Fossil Record. Anatomical Evidence. Molecular Evidence. Embryological Evidence. Evidence for Evolution. Fossil Record. Evidence for Evolution. Mechanisms of concerted evolution. Unequal cross-over. Gene conversion: non-reciprocal transfer of information between homologous sequences; the main mechanism invoked to explain concerted evolution. Leonard Brand. Professor of Biology and Paleontology. Department of Earth and Biological Sciences. Loma Linda University. Goal of this talk:. Evaluate the current state of the evidence for the evolution of life forms by random mutation and natural selection. (Hons), Zoology. Panjab University, Chandigarh. ORIGIN OF UNIVERSE. BIG BANG THEORY. Thermonuclear explosion. Origin of universe occurred 20 . bya. .. ORIGIN OF EARTH. NEBULAR HYPOTHESIS. Condensation of gases under Gravitational force. Chapter 17: Processes of Evolution. Early Beliefs. 19. th. century: discovered species shared many traits, but lived in different parts of the world. Problematic – species only looked similar on the outside, but inside were very different . Science. Comparison with blood chemical (‘B’) between humans and other vertebrates.. humans. -. chimpanzee. 0. chicken. 11. Rhesus monkey. 1. frog. 17. mouse. 8. lamprey. 29. Challenge answer. What organisms are most closely related to us? . Evolution. – when a species of plants or animals adapts to their environment in order to survive over a long period of time. Key points!. Species. Plants or Animals. Adaptations. In order to survive. Evolution 9/11. Obj. TSW learn form mistakes made on the quiz, and take notes about evolution after the Environmental Science Current Events. P. 34NB. Make a food chain for the following organisms showing the energy arrows and the . . The process by which organism change over time. Based on science, not opinion.. Darwin. :. Evolution is descent with modification. Evolution. :. changes through time. Species accumulate difference. and Variation . What is Evolution?. Simply… a change in living organisms over time. Why study evolution?. Evolutionary concepts provide a solid foundation to much of modern biology. - . you can’t fully understand current trends in biology or you will have difficulty understanding evolution.