BIOA01H3 Chapter Notes - Chapter 23: Speciation, Ingroups And Outgroups, Polyphyly

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Mark Fitzpatrick

Document Summary

Biology: chapter 23: evolutionary patterns: evolution produces two distinct but related patterns, the nested pattern of similarities found among species on present-day earth, the historical pattern of evolution recorded by fossils. Chapter 22 main idea: speciation concept the set of processes by which psychically, physiologically or ecologically isolated populations diverge from one another to the point where they can no longer produce fertile offspring. Node: the closest relative connected between two species at the nearest fork branch is known as a node. Phylogenetic: the study of the evolutionary relationships among organisms. Phylogenetic tree: amis to discover the pattern of evolutionary relatedness among groups of species or other groups by comparing their anatomical and molecular features. The search for sister groups lies at the heart of phylogenetic: two spices or groups of species are considered to be closest relatives if they share a common ancestor not shared by any other species or groups.