AP Biology- Phylogenetic Trees – Flashcards
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What is a phylogenetic tree used for?
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represent evolutionary relationships
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What is the name of a type of phylogenetic tree?
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cladogram
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What is a clade?
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a group of all organisms with common traits
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From who did the idea of a phylogenetic tree come?
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Charles Darwin
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What does each line on a phylogenetic tree represent?
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an organism
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What does the distance between each line on a phylogenetic tree mean?
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how long ago they had a common ancestor
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What does the line that connects all the branches represent on a phylogenetic tree?
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common ancestor
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What can you see in a rooted phylogenetic tree?
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the outlying line of the common ancestor
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What is another name for the common ancestor in a phylogenetic tree?
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outgroup
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Does an unrooted phylogenetic tree show the common ancestor?
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no
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What is another term for clade?
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monophyletic group
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How do you know if you have a monophyletic group or not?
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if all of the descendants of a species are included
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True or false: the information on patterns of evolutionary descent are the same regardless of the lengths of the branches in a phylogenetic tree?
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true
