Biology 1201A Lecture Notes - Lecture 20: Phylogenetic Tree, Phylogenetics
Document Summary
The study of the evolutionary history and relatedness among individuals or groups of organisms. Chimpanzees are not necessarily more primitive than humans. Time goes upward (from the past to the present) as opposed to from left to right. Displays the evolutionary relationship of species/groups or species. Allows you to identify which traits have evolved through history. The earliest time point in the tree. Branches show the connection b/w different organisms. Existing organisms are located here in the present (the descendants that have resulted from this evolutionary process) Show how much evolution has happened in history. Imply when the common ancestor of the lineages occurred. As you go through evolutionary time, the branches always split into two. The parents making offspring is one generation through time. Evolutionary trees map the whole pop"n of a species; in this case, plants. The several generations can interbreed, and create some flow b/w the various lineages.
