BIO 200 Lecture Notes - Lecture 10: Monophyly, Convergent Evolution, Paraphyly
6 Nov 2017
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Common descent: all organisms are related to each other. Phylogeny: diagram of relationships and how organisms are related to each other. More species mutation records = more information: non-dna traits used for making phylogenies: Bird wing: making trees with trait tables: The organism with no traits will be placed first, and with each extra trait an organism will be added. Tick marks are a sign of a new trait: universal common ancestor luca (of all organisms, most recent common ancestor (mrca) (for select organisms, eukaryotes are monophyletic. Monophyletic: a group containing its mrca and all descendants of that mrca. The mrca for achaea gives rise to all archaeans, including the eukaryotes: the prokaryotes are all living things that are not eukaryotes. Paraphyletic: a group containing its mrca, but not all descendants of that mrca. Birds are the dinosaurs that survived the kt extinction.
