Classification
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Classification Classification Grouping similar organisms together
description
Classification. Grouping similar organisms together. Taxonomy. science of identifying, naming and classifying organisms first developed by Carl Linneaus in 1750’s based on morphology (body shape/form) uses a 2 part Latin naming system called binomial nomenclature - PowerPoint PPT Presentation
Transcript of Classification
ClassificationClassificationGrouping similar organisms together
TaxonomyTaxonomyscience of identifying, naming and
classifying organismsfirst developed by Carl Linneaus in
1750’sbased on morphology (body
shape/form)uses a 2 part Latin naming system
called binomial nomenclature1st word is the genus, 2nd the speciesHomo sapien (H. sapien)Ursus americanus Ursus maritimus
species further grouped into different levels (taxa)
each level higher, organisms are less related
PhylogenyPhylogenyevolutionary development of a gp
of organismsuse fossils, DNA analysis &
proteinsmore similar DNA & proteins are
more closely related 2 things are
Phylogenetic TreesPhylogenetic Treeshypothesis of the evolutionary
relationships
CladesCladestip of a branch on a phylogenetic
treeshows an ancestor species and
all its descendants
Dichotomous KeyDichotomous Keyway of determining the correct
species of an organism
• it uses a series of paired comparisons to sort organisms into smaller and smaller groups
• ex Musicians
Male Female
Rap Pop From Napanee Not From Napanee
