Classification Levels
This rank comes directly below family
What is genus
This two-part naming system is used for all species
What is binomial nomenclature?
This diagram shows evolutionary relationships among organisms
What is a phylogenetic tree
This domain includes organisms without a nucleus and includes “true bacteria.”
What is Bacteria
This tool helps identify organisms using paired, either/or statements
What is a dichotomous key?
This is the correct order from most broad to most specific classification
What is Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species
In Panthera leo, this word represents the genus
What is Panthera
This term describes traits shared due to common ancestry.
What is homology?
This domain is more closely related to Eukarya than to Bacteria
What is Archaea
This term refers to organisms that are genetically distinct but look nearly identical.
What are cryptic species
This rank was added above kingdom in modern classification systems
What is domain
This rule states that the earliest validly published name must be used
What is the principle of priority
This term describes similar traits that evolved independently in different lineages
What is homoplasy?
This kingdom includes organisms that absorb nutrients and have cell walls made of chitin.
What is Fungi
This type of speciation occurs due to geographic isolation.
What is allopatric speciation?
This rank groups together related classes.
What is phylum
This term describes a duplicate scientific name for the same species
What is a synonym
This type of group includes an ancestor and all of its descendants
What is a clade (monophyletic group)
This kingdom is often considered a “catch-all” for eukaryotes that are not plants, animals, or fungi
What is Protista
This evolutionary process allows genes to move between unrelated species.
What is horizontal gene transfer?
This is the most specific taxonomic rank that still includes multiple populations capable of interbreeding
What is species
This official set of rules governs the naming of animals
What is the International Code of Zoological Nomenclature (ICZN)
This method favors the evolutionary tree with the fewest changes
What is maximum parsimony?
This domain is defined by organisms that have membrane-bound organelles
What is Eukarya
This type of group includes a common ancestor but not all of its descendants.
What is a paraphyletic group?