BILD 3 Lecture Notes - Lecture 7: Bipedalism, Flowering Plant, Mammal
20 Oct 2016
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Document Summary
Macroevolution any evolutionary change at or above the level of species. A phylogeny is a hypothesis of the evolutionary history of a species or group of related species. Systematics classifies organisms and determines their evolutionary relationships. The science of systematics builds phylogenetic trees. The axis from he base of the tree to the tips always represents time. Each node represents the common ancestor of all the descendants. To find the common ancestor of any group of organisms, just trace from the living organisms towards the base where they all meet is the ancestor. Sister taxa 2 taxa that derive from an immediate common ancestor, each other"s closest relative. Carolus linnaeus introduced a system for grouping species in increasingly broad categories. Doman, kingdom, phylum, class, order, family, genus, and species. Create well supported phylogenies that accurately depict evolutionary history. Monophyletic signifies that it consists of the ancestor species and all its.
