BIO 181 Lecture 10: 10 - Phylogeny
11 Nov 2016
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Topic 10: Chapters 23 Lecture Guide
Phylogeny
Taxonomy
• Hierarchical system involving successive levels; based on similarities and differences
•Ray & Linnaeus
•Binomial nomenclature (by Linnaeus)
•Scientific names
»Genus and species, e.g., Homo sapiens
»H. sapiens
»Felis concolor coryii
•Coryii would be a subspecies
•This For example, is the Florida mountain
lion. If we remove “coryii,” this would only
be a mountain lion.
»Or Felis spp.
•This means many species of the Felis genus
•Sp. would mean a single species of the Felis genus
Extant = opposite of extinct – still alive today. In a phylogenetic tree, the species on the tip are
still alive today.
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Topic 10: Chapters 23 Lecture Guide
Hierarchical Classification
Taxon (taxa, plural)
- Protists are under the Eukarya Domain
Does King Phillip Come Over For Spaghetti
Classification Scheme for Humans:
Domain: Eukarya
Kingdom: Animalia
Phylum: Choradata
Subphylum: Vertebrata
Class: Mammalia
Order: Primata
Family: Homonidae
Genus: Homo
Species: Sapien
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Phylogeny: hierarchical system involving successive levels; based on similarities and differences, ray & linnaeus, binomial nomenclature (by linnaeus) Felis concolor coryii: coryii would be a subspecies. This for example, is the florida mountain lion. If we remove coryii, this would only be a mountain lion. This means many species of the felis genus. Sp. would mean a single species of the felis genus. In a phylogenetic tree, the species on the tip are still alive today. An analytical approach to understanding the diversity and relationships of organisms, extant and extinct. Phylogeny evolutionary history of a species or group of species. Sorting homology from analogy: gather morphological or molecular data, molecular data has caused many revisions, use mathematical strategies to analyze data, construct evolutionary trees. Cladistics: reconstructs phylogenetic tree by considering various possible pathways of evolution and then proposing plausible tree. Shared primitive character: trait shared with a distant ancestor.
