Classification: The arrangement of organisms into group of various sizes on the base of shared features

Taxonomy: A form of classification that focuses on physical similarities between different species for naming and classification

Phylogeny: The classification of organisms by their evolutionary relationship so that every group shares a common ancestor

Binomial System

 Universal system based on Latin

 The first name, known as the generic name, denotes the genus to which the organism belongs to (equivalent to someone’s last name)

 The second name, known as the specific name, denotes the species to which the organisms belongs to. This name is unique to the species (Equivalent to someone’s first name)

Rules of the Binomial System

 The names are printed in italics (or underlined if handwritten) as they are scientific names

 The first letter of the generic name is upper case but the first letter of the specific name is lower case

 If the specific name is not known, it can be replaced with ‘sp’

 If a subspecies is found, the extra name is added to the binomial species name

e.g. Siberian Tiger = Panthera tigris altaica

where Panthera = large cat

tigris = tiger

altaica = Unique Siberian tigers

Rank

e.g. Tiger

Domain

Eukarya

Kingdom

Animalia

Phylum

Chordia

Class

Mammalia

Order

Carnivora

Family

Felidae

Genus

Felix

Species

Tigris

All members of the same species share the ability to bread among each other to produce fertile offspring