BIO 201 Lecture Notes - Lecture 5: Animal, Archaeplastida
24 Mar 2016
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Two points: the number of taxa in a data matric determines the number of phylogenies that need to be evaluated, the data (characters and states) are used to ind which of these phylogenies is best supported, parsimony. Can be deined as the bets it soluion given the data that we have or the simplest soluion is the best soluion . Parsimony is a central philosophical principle of the sciences; it is not unique to phylogeneic. In phylogeneics, parsimony may be used methodologically to ind the phylogeny that minimizes the number of character-state changes given a data matrix. We use parsimony to ind the bet supported hypothesis. They are measure how it hypothesis for the data: tree length/ci. Tree length: the number of character state changes your hypothesis requires (changes seen on the phylogeny) Consistency index: minimum number of changes/actual number of changes (for all characters on a phylogeny) Best possible number is 1. 0 (perfectly its data; most parsimonious)
