PPT-Chapter 25: The Origin and Evolutionary History of Life on

Chemical conditions of the early Earth A model for the first cells First life Life changes the planet oxygenating Earths oceans and atmosphere Eukaryotic cells descended from prokaryotic cells. Read Chapter 4. Phylogeny. All living organisms are related to each other having descended from common ancestors.. Understanding the evolutionary relationships between groups enables us to reconstruct the tree of life and gain insight into history of evolutionary change.. Matthew F. Tabor. https://en.wikipedia.org/wiki/Archaeopteryx. http://oficina.cienciaviva.pt/~pw011/jazidas/interrelacoes_theropoda.html. Bird . Phylogeny. Origin of Feathers. Prum. – Development and Evolutionary Origin of Feathers, 1999. Scott L. Nuismer. 0.  .  .  . What is coevolution?. ". Thus I can understand how a flower and a bee might slowly become, either simultaneously or one after the other, modified and adapted to each other in the most perfect manner, by the continued preservation of all the individuals which presented slight deviations of structure mutually . THE ORIGIN AND EVOLUTION OF MICROBIAL LIFE. HOW DID LIFE ORIGINATE?. SPONTANEOUS GENERATION. LIFE ARISING FROM NON-LIVING MATTER. LONG BELIEVED AS THE ACCEPTED EXPLANATION OF ORIGINATION OF LIFE. EXPERIMENTS EVENTUALLY SHOWED IT TO BE IMPOSSIBLE. Dr. . Jagdish. . kaur. P.G.G.C.,Sector. 11. , Chandigarh. . . SIMPLY THE CHANGES OVER TIME. EVOLUTION. Human Evolution. The evolutionary timeline is divided into sections of time called eras – which are then divided into smaller units of time called periods.. shall mean the quietus issued by the auditor upon a person depositing in his/her office the receipt of the treasurer for money paid into the county treasury. Warrant shall mean an order or check is as Branches of. the Tree of Life. Overview. Plants, fungi and animals are the three kingdoms of multicellular organisms. .. Land plants are known to have evolved from organisms similar to some living green algae. Objective. SWBAT explain and demonstrate that organisms share many conserved core processes and features that evolved and are widely distributed among organisms today.. Agenda. Chapter 25 Quiz. Chapter 26 notes: sections 26.1, 26.2, and 26.3. “…sparked by just the right combination of physical events & chemical processes…”. Bacteria. Archae-. bacteria. Animalia. Fungi. Protista. Plantae. 4500. 4000. 3500. 3000. 2500. 2000. 500. Conditions on early Earth made the Origin of Life possible.. Current theory about how life on Earth began.. Earth formed about 4.6 billion years ago.. Earth was too hot and still being bombarded by meteors, any water evaporated.. How does worldview affect how people think about the history of life?. The Evolution of Evolution. Biological evolution: the slow, gradual change in organisms from one kind to another. Species: groups of organisms that look the same and have the same structure. Theories of origin of life. What is life?. The condition that distinguishes . animals and plants. from . inorganic matter. , including the capacity for . growth. , . reproduction. , . functional activity. 1. Artist’s Conception of Earth 3 billion years ago. 2. 3. I. . . Concept 25.1: The Origin of Life. A. Introduction. 1. Conditions at this time on Earth were such that life could have arisen by . Origin of Life. Darwin’s theory is based around the idea of a common ancestor that all living organisms can be traced back to. . This ancestor is called the Last Universal Common Ancestor or LUCA. .