I LEVELS OF CLASSIFICATION Biologist classify organisms based

I. LEVELS OF CLASSIFICATION *Biologist classify organisms based on appearance, structure, breeding patterns, and similarities in DNA sequence. Mneumonic: Dear King Philip Came Over For Good Soup

Classificati on Domain Mneumonic: Dear King Philip Came Over For Good Soup basic unit of biological classification

Levels of Classification Most Inclusive/ Least Specific Least Inclusive/ Most Specific

Most Inclusive/Least Specific Most Inclusive /Least Specific Least Inclusive/Most Specific *Each level of classification is based on characteristics shared by all the organisms it contains. If two organisms belong to the same class what other taxons/levels do they share?

II. Taxonomy – the science of naming and classifying organisms polynomial – “many” names, in the 1700’s descriptive phrases were used to name organisms resulting in many names that caused confusion

Carl Linnaeus – a Swedish biologist who developed the twoword Latin name for each species p Binomial Nomenclature – a two-word Latin system for naming organisms developed by Linnaeus

p Scientific Name – the two-part name for a species; the first word is the genus classification; the second word is the species classification ex: Homo sapiens (humans) Canis familiaris (dog) Canis lupus (wolf)

Eight Levels of Classification: p Domain p Kingdom p Phylum (Phyla) p Class p Order p Family p Genus p Species makes up Scientific Name!!!

Levels of Classification: Frog Makes up Scientific Name Domain - Eukarya Kingdom - Animalia Phylum - Chordata Class Amphibia Order Anura Family - Ranidae * Genus – Rana * Species - catesbiana

Lizard Domain Kingdom Phylum Class Order Family * Genus * Species Eukarya Animalia Chordata Reptilia Squamata Gekkonidae Gekko gecko Snake Eukarya Animalia Chordata Reptilia Squamata Viperidae Agkistrodon contortrix

p If the scientific names given below are: Homo sapiens (humans) Canis familiaris (dog) Canis lupus (wolf) What is the genus name for humans? Homo What is the species name for wolf? lupus