Chapter 18: Classification Flashcards
Binomial Nomenclature
Two-word naming system invented by Carolus Linnaeus
Taxonomy
Scientist classify organisms and assign each organism a name
Genus
Group of closely related species
Taxon
Levels of binomial nomenclature
Family
Genera that share characteristics
Order
Level consisting of similar families
Class
Composed of similar orders
Phylum
Group of many different organism that share characteristics
Kingdom
Largest and most inclusive
Phylogeny
Evolutionary relationships.
Evolutionary classification
Strategy of grouping together due to their evolutionary history
Derived characters
Characteristics that appear in recent lineage but not in ancestors
Cladogram
Diagram that shows evolutionary relationships
Molecular clock
Model that uses DNA comparisons to the length of time that two species have been evolving independently
Bacteria
Unicellular and prokaryotic