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Phylogeny, systematics, and classification

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Phylogeny, systematics, and classification Phylogeny The evolutionary history of a species or a group of species over geologic time Phylogenic tree Systematics ... – PowerPoint PPT presentation

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Title: Phylogeny, systematics, and classification


1
Phylogeny, systematics, and classification
2
Phylogeny
  • The evolutionary history of a species or a group
    of species over geologic time

3
Phylogenic tree
4
Systematics             Systematics the study
of biological diversity in an evolutionary
context, including taxonomy and
phylogenetics.   1.  Taxonomy uses a hierarchical
classification system a.  Linnaean (binomial)
system of classification  genus and
species.   b.  Hierarchical classfication 
Kingdom, Phylum, Class, Order, Family, Genus,
Species                                     - A
named taxonomic unit at any level is called a
taxon.  
5
Modern classification hierarchy
6
Modern phylogenetic systematics are based on
cladistic analysis a.  A phylogenetic diagram
(tree) is also called a cladogram.    b.  Each
branch in the tree is called a clade.    c. 
Monophyletic pertains to a taxon that is derived
from a single ancestral species. ? only
legitimate cladogram type!  
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