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The study of evolutionary relationships between species. Involves studying how closely different species are related.
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Any 2 living organisms have a common ancestor at some point in the past.
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The more recent the common ancestor, the more closely related they are.
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Natural classification places similar species in a group
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Any two living organisms have a common ancestor
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When species started to evolve differently there are branch points or nodes on the tree
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More recent common ancestors mean closer relations.
Example tree
