Today

1
Todays Objectives

• TSW be able to recite the levels of taxonomic
  hierarchy.
• TSW be able to name the six kingdoms
• TSW be able to identify systematics types.

2
Taxonomic Hierarchy

• What is a taxon?
• What are the 7 levels of hierarchy?

3
A Note on NOMENCLATURE

• Carolus Linnaeus
• Binomial nomenclature system

4
The Six Kingdom System

• Archaebacteria
• Eubacteria
• Fungi
• Protista
• Plantae
• Animalia

5
Systematics

• Evolutionary systematics
• Organisms will resemble each other and their
  ancestor more than distant organisms
• Homologies result from common ancestry
• Analogies result from common evolutionary
  pressures

6
Systematics

• Numerical taxonomies
• Organisms grouped according to mathematical
  formulae based on OVERALL similarities
• Deal only with closely related taxa

7
Systematics

• Cladistics
• Emphasize homologies synapomorphies
• Tries to show evolutionary relationships in a
  group
• Produces cladograms

8
Sample Cladogram
9
Systematics

• Molecular systematics
• Molecular clocks
• Compares sequences of amino acids or nitrogenous
  bases