ANT203H5 Lecture Notes - Lecture 19: Tree Of Life Web Project, Marsupial Mole, Common Chimpanzee
Document Summary
Developed by carolus linnaeus (1707-1778: groups organisms into taxonomic categories. Uses binomial nomenclature in which an organism is assigned: two names, a generic name (genus) and a specific name (species, both are italicized and only the genus is capitalized. One of the main goals of systematics is to elucidate the ancestral relationships of organisms, and also to understand their evolutionary history. I recommend that you visit the tree of life web project, available at: http://tolweb. org/tree/ However, this is not an easy task, as we will review below. Homology: presence of traits or features that are a result of common ancestry: for example the tetrapod limb. Homologous traits: traits found in different species that have a common origin (although they may have a different function). Analogous traits: traits found in different species that have the same or similar function, but have different evolutionary origins: these are the one that create problems. Wings of insects, birds and bats (analogous traits.
