PCB 4674 Lecture Notes - Lecture 49: Phylogenetic Tree, Cladistics, Polyphyly
14 Apr 2018
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Document Summary
Showed how to create them using evidence from organisms aka the principle of parsimony applied to taxonomy. He is known for development of method for reconstructing a method of divergences and tree of life. A species set that shows branch splitting for phylogeny. Splitting is the process of speciation which is being represented in branches of a phylogenetic tree. No currently existing species is ancestral to another. Evolutions that occur are usually inherited into all future species? (t/f) Feature that evolved in a common ancestor and is held by all of its descendants. Amniotes (eggs with an amnion, not reptiles and birds) It is a subdivision of a larger tree, highlights all lineages from common ancestor. It can be removed by cutting one branch. A group that doesn"t include all descendants that are from a common ancestor, but they all share a common ancestor. Describes a taxon that doesn"t include the common ancestor of all the members of the taxon.
