1. Classification of Life
First classification system placed all life into 2 groups: Plants or Animals.
Next system developed used 7 subdivisions:
Kingdom
Phylum
Class
Order
Family
Genus
Species
Current system uses these 7 plus a larger group:
DOMAIN

2. Classification of the Grizzly Bear
DOMAIN: Eurkaya (eukaryotic cells)
KINGDOM:Animalia
PHYLUM: Chordata
CLASS: Mammalia
ORDER: Carnivora
FAMILY: Ursidae
GENUS: Ursus
SPECIES: Ursus arctos

3. Each subdivision becomes more specific.
Ex. Domain is most diverse
Species is least diverse
Each subdivision is called a taxon.
Binomial Nomenclature
Using the last 2 taxon (genus & species) as the scientific name.
Ex. Common name- tiger
Scientific name- Panthera tigris
Common name- human
Scientific name- Homo sapiens

4. How do you classify? 1. Physical traits
- grouping based on physical similarities
2. DNA similarities
- grouping based on similar genes.
3. Evolutionary History
- Ex. Cladogram
- diagram that shows evolutionary
relationships.

5. CLASSIFICATION BASED ON VISIBLE SIMILARITIES
Traditional Classification Versus Cladogram
Appendages
Conical Shells
Crustaceans
Gastropod
CLASSIFICATION BASED ON VISIBLE SIMILARITIES
CLADOGRAM

6. Cladogram/Phylogenetic Tree

7. Current Method of Classifying
DOMAINS:
1. Archae
- prokaryotes that live in extreme environments
Ex. hot springs and acid pools
- includes Kingdom Archaebacteria

8. - most common type of prokaryote - includes the Kingdom Eubacteria
Streptococcus
- causes strep throat
E. Coli
- helps aid digestion

9. 3. Eukarya - eukaryotic organisms (nucleus) - includes 4 Kingdoms: Protist Fungi Plant Animal

10. Cladogram of 3 Domains and 6 Kingdoms DOMAIN EUKARYA DOMAIN ARCHAEA
Eubacteria
Archaebacteria
Protist
Plant
Fungi
Animal
DOMAIN BACTERIA