Biology / Bio 1789 · Atom · ~20 seconds
The Phylogenetic Tree as Hypothesis
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A phylogenetic tree is a diagram of hypothesized evolutionary relationships, treated as testable rather than a settled, final record.
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A published tree revised after new DNA evidence contradicts an earlier branch placement shows it functioning as a hypothesis, not a fixed fact.
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A phylogenetic tree can change as new evidence arrives — publishing one version does not close off revision.