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AP Biology Chp 26 Phylogeny terms Flashcards

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6649416035PhylogenyEvolutionary history of a species or a group of species.0
6649416036SystematicsFocused on classifying organisms and determining their evolutionary relationship.1
6649416037TaxonomyHow organisms are named and classified.2
6649416038BinomialGenus + specific epithet(unique for each species in a genus).3
6649416039Order of ClassificationDomain, Kingdom, Phylum, Class, Order, Family, Genus, Species.4
6649416040Phylogenetic TreeBranching diagram explaining the evolutionary history of a group of organisms.5
6649416041Branch PointsShows where the divergence of two evolutionary organisms are from a common ancestor.6
6649416042HomologiesSimilarities due to shared ancestry. Morphological divergence between related species can be great and their genetic divergence small. (Or vice versa).7
6649416043AnalogySimilarity due to convergent evolution rather than shared ancestry. (Not related, but have similar features.) Ex. A bird's wing and a Bats wing.8
6649416044Convergent EvolutionOccurs when similar environmental pressures and Natural selection produce similar (Analogous) adaptation in organisms from different evolutionary divergences.9
6649416045Molecular SystematicsThe Discipline that uses DNA and other molecular data to determine evolutionary history.10
6649416047CladisticsThe common ancestry is the primary criterion used to classify organisms. Scientists group species in Clades: each of which includes an ancestral species and all of its transcendence.11
6649416048MonophyleticAll descendants and ancestral species, this is the only way a clade can be equivalent with a taxon.12
6649416049ParaphyleticConsists of an ancestral species and some, but not all of its descendants.13
6649416050Polyphyleticincludes taxa with different ancestors.14
6649416052Character/CharacteristicsAnother word for Trait or Traits.15
6649416053Derived CharacterAn evolutionary novelty unique to a particular clade. Ex. Mammals have the character of hair which isn't seen in earlier ancestors.16
6649416054OutgroupThe species or group of species from an evolutionary lineage that is known to have diverged before the lineage that includes the species that is being studied.17
6649416055Parsimony"Occam's Razor" The principal that the simplest explanation (that explains the facts) is the most likely explanation.18

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