PPT-Chapter 4 Phylogeny and evolutionary history

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. Phylogenies. The process of evolution produces a pattern of relationships between species. . As . lineages evolve and split and modifications are inherited, their evolutionary paths diverge. . This . 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.. 26.1. Phylogeny. Evolutionary history of a species or a group of related species. Made by using evidence from systematics. Focuses on classifying organisms & relationships. Uses fossils, morphology, genes, & molecular evidence. Systematics. Phylogeny. Phylon. = tribe, . geny. . = genesis or origin. The evolutionary history of a species or a group of related species.. Investigating the Tree of Life. Phylogeny: the evolutionary history of a species or group of species. Investigating the Tree of Life. Legless lizards have evolved independently in several different groups. Figure 26.1. Phylogeny. is the evolutionary history of a species or group of related species. For example, a phylogeny shows that legless lizards and snakes evolved from different lineages of legged lizards. 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 . Chapter 18. “When you realize how perfect everything is, you will tilt your head back and laugh at the sky”. -. Budda. What is a Species?. Biological species concept. : species are groups of actually or potentially interbreeding natural populations which are . Haeckel’s evolutionary trees are among the first attempts at phylogeny inference.. Darwin’s tree. Schools of thought. A. Evolutionary Taxonomy. The basic view was that the best way to reconstruct the phylogeny of a group is to spend a lifetime learning everything one can about the biology of the group.. 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. 1. 2. What are the evolutionary relationships between a human, a mushroom, and a flower?. A phylogeny based on DNA data reveals that animals (including humans) and fungi (including mushrooms) are more closely related to each other than . Dr. Habibur Rahman. Associate Professor. J. N. College, Boko. What Is Phylogeny?. Phylogeny is the study of relationships among different groups of organisms and their evolutionary development. Phylogeny attempts to trace the evolutionary history of all life on the planet. It is based on the phylogenetic hypothesis that all living organisms share a common ancestry. The relationships among organisms are depicted in what is known as a phylogenetic tree. Relationships are determined by shared characteristics, as indicated through the comparison of genetic and anatomical similarities.. Nasser Ben Qasem . 503-Biology . WIU . Turtles.  are . reptiles . of the . order . Testudines.  characterized by a special . bony . or. . cartilaginous shell. . The order Testudines includes both extant (living) and . Module-III . B.Sc. 4. th. sem.. By. Dr. . Gyanranjan. . Mahalik. Asst. Prof.. Dept. of Botany; . SoAS. . Centurion University of Technology and Management . Systematics.  is the part of science that deals with grouping organisms and determining how they are related. It can be divided into two main branches. Terminology. phylogeny . evolutionary history of a species or group of species. systematics. . classifying and determining evolutionary relationships of organisms . taxonomy . classifying and naming of organisms.