Today’s 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.

Taxonomic Hierarchy
What is a taxon?
What are the 7
levels of hierarchy?
A Note on
NOMENCLATURE
Carolus Linnaeus
Binomial nomenclature
system
The Six Kingdom System
 Archaebacteria
 Eubacteria
 Fungi
 Protista
 Plantae
 Animalia
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
Systematics
 Numerical
taxonomies
–Organisms grouped according to
mathematical formulae based on
OVERALL similarities
–Deal only with closely related
taxa
Systematics
Cladistics
–Emphasize homologies –
synapomorphies
–Tries to show evolutionary
relationships in a group
–Produces cladograms
Sample Cladogram
Systematics
Molecular
systematics
–Molecular clocks
–Compares sequences of
amino acids or nitrogenous
bases