Phylogeny Flashcards Preview

Bio 121 > Phylogeny > Flashcards

Flashcards in Phylogeny Deck (15):
1

Phylogeny

Evolutionary history of a group of species or group of related species

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Systematics

Classifies organisms and determines their evolutionary relationships
Fossil, molecular, and genetic data to infer evolutionary relationships

3

Taxonomy

Ordered division and naming of organisms

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Binomial

2 part naming system of species
Developed by Carolus Linnaeus

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Branch point

Divergence of 2 species

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Sister taxa

Groups that share an immediate common ancestor

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Rooted tree

Includes a branch that represents the last common ancestor of all taxa in the tree

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Basal taxon

Diverges early in the history of a group and originates near the common ancestor of the group

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Polytomy

Branch from which more than 2 groups emerge

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Early taxonomy

2 kingdoms: plants and animals

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5 kingdoms

Monera (prokaryotes), protista, plantae, fungi, and anamalia

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3 domains

Bacteria, archaea, eukarya

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Monophyletic group

Common ancestor
All descendants

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Paraphyletic group

Common ancestor
Not all descendants

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Polyphyletic group

2 or more ancestors