PPT-How are these organisms similar to one another? How are th

Bird frog sea star shark sponge squid worm jellyfish clam coral and other organisms TRY and divide them into two main categories based on classification List the categories and divide them organisms into two groups. Chapter 15. Darwin's Theory of Evolution. What is Evolution?. Evolution is…... Change in a species over time. The process by which modern organisms have descended from ancient organisms. A theory. Well-supported testable explanation (hypothesis) of phenomena that have occurred in the natural world. Chapter 18. Why Classify. Classification is used to name organisms and group them in a logical manner . Biologists have classified and named over 1.5 million species. Estimate that 2 million- 100 million have yet to be discovered. Phylogeny. The evolutionary history of a species or group of species. . Convergent Evolution. A process in which species from different evolutionary branches may come to resemble each other if they live in similar environments and natural selection favored similar adaptions.. 1. Which structures show evidence of common ancestry?. analogous. homologous. [Default]. [MC Any]. [MC All]. 2. How does embryology show evidence of common ancestry?. Shows all organisms have offspring that are exactly the same. Which animal has INCREASED fitness?. Living in a dry, wooded area in the fall season…... Living in north Canada…in the winter time….. What are these called??. What is it called when humans intervene and create changes in a population?. Struggle for existence. High birth rates and shortage of life’s needs. Food and living space. Fitness – ability to survive and reproduce in your environment. Survival of the fittest. Adaptation. Characteristic to . EVOLUTION. What is Evolution?. . What is Evolution?. A process of biological change over generations that makes descendants become gradually . different. from their ancestors. Charles Darwin. gets much of the credit for the theory of evolution . Introduction. Charles Darwin was a biologist who lived during the 1800s. Scientific thinking was shifting (biology & geology). Evolution = the process of change over time. Darwin developed a theory that explains how modern organisms evolved over long periods of time through descent from common ancestors.. The theory of evolution is supported by evidence from . the fossil record. comparative anatomy. comparative embryology. biogeography. molecular biology. and observed evolutionary change. . Trends in hominid evolution from early ancestors to. By Dr. J. Suris Soto. Objectives . By the end of this lesson you should be able to . List several examples of evidence for evolution.. Explain how fossils, and the fossil record document the descend of modern species from ancient ancestors.. 2. Fossils provide evidence of organisms that lived in the past. 3. The wing of a bat has bones that are similar to those in the human arm. 4. DNA can tell us how closely related 2 organisms are.. 5. Whales are descended from land dwelling mammals. Causes of Evolution: . Natural Selection . Migration. Mutation. What is Natural Selection? . Survival of the ‘fittest’. Occurs through INHERITED adaptations. What is migration?. Movement of animals from one area to another. . etc. . TAXONOMY. Why classify things?. Organize. Categorize. Order. _______________________. _______________________. _______________________. Supermarkets. Linneaus. 1750. . Grouped living things by their PHYSICAL TRAITS. In microbiology, . taxa. are . intially. constructed from . strains. . A . strains . is made up of all the descendants of a pure culture. It is usually a succession of cultures derived from an . intial.