BIO 124 Lecture Notes - Lecture 10: Natural Selection, Monophyly, Autapomorphy
9 Mar 2016
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Lecture notes o o o o o o o o o o o o o o o o o o o o o o. Genus irst capitalized, species second and lowercased, all has to be. Linnean classiicaion: taxon (named unit at any system level) Darwin: all species share a common ancestry from one common ancestor. This is relaive to what is being talked about. Branch point: also called node - where the branch breaks of. Polyomy: can"t resolve relaionships between some species: need more informaion. Phylogeneic trees show patern of descent, not phenotypic similariies. Unless there"s a imeline, you can"t draw conclusions about ime and relaionships. Taxa are not presumed to be older/younger than one another. Molecular homology: base pairs can be deleted and inserted and have to add space when comparing two because they may not be able to recognize matches otherwise. 25% of similar homology isn"t really considered evidence for homology but more is evidence.
