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Biology Exam 2 Part 2 Study Guide |
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Phylogeny
The evolutionary history of a species or group of related species.
Systematics
The discipline that classifies organisms and determines their evolutionary relationships using
morphological, molecular, and biochemical data.
Topology
The specific branching pattern of a phylogenetic tree, which represents evolutionary
relationships.
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Branch Length
Does not indicate relatedness or time unless explicitly scaled to genetic change or fossil
dates.
Tree Rotation
Branches can rotate around any node (branch point) without changing the underlying
evolutionary relationships.
Taxon Proximity
The left-to-right order of terminal taxa does not determine relatedness; always trace
branches back to the most recent common ancestor.
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