TaxonomyD. Binomial nomenclature1. System of scientific naming2. Developed by Carolus Linnaeus

(Swedish botanist) in 1750s3. Two part scientific name Genus and

species4. Must be underlined or in italics5. In Latin (dead language of scholars)

TaxonomyE. Example :

Homo sapiens(wise man)

1. Scientific name for human beings

2. Homo = genus (capitalized & underlined)

3. sapiens = species (underlined, but NOT

capitalized)

Taxonomy

J. An example:Kingdom AnimaliaPhylum ChordataClass MammaliaOrder PrimatesFamily HominidaeGenus HomoSpecies sapiens

Taxonomy

F. Definition of species =

1. breed successfully viable, fertile offspring

2. unique features similar to others of same species

3. have similar DNA to other species members

Taxonomy

H. Kingdom is least specific, largest groupI. Species is most specific,

contains only one kind of organism

Classification Systems: a short history

• in 1866, Ernst Haeckel divided animals, plants, and microorganisms into 3 kingdoms

– Animalia– Plantae– Protista

K. Other Systems of Classification

2. Three Domain System