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evolutionary tree
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Diagram comparing two phylogenetic trees based on molecular changes: one tree shows evolutionary relationships among four species using myoglobin changes, and the other compares humans, rhesus monkeys, and horses using cytochrome c changes, with arrows and numbers indicating the amount of molecular change between branches.
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evolutionary tree

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Diagram comparing two phylogenetic trees based on molecular changes: one tree shows evolutionary relationships among four species using myoglobin changes, and the other compares humans, rhesus monkeys, and horses using cytochrome c changes, with arrows and numbers indicating the amount of molecular change between branches.
two phylogenies based on the amount of change in macromolecules (Left) Amount of change in the evolutionary history of three hypothetical living species (C, D, and E), inferred by comparing amino-acid differences in their myoglobin molecules. All three species have the same earlier ancestor (A). (Right) Phylogeny of the human, the rhesus monkey, and the horse, based on amino-acid substitutions in the evolution of cytochrome c in the lineages of the three species.

A phylogenetic tree is a diagram that illustrates the evolutionary relationships among a group of organisms, showing how they have descended from a common ancestor. The ancestor is at the base of the tree, and the descendants are at the tips of the branches. The closer two organisms are on the tree, the more recently they shared a common ancestor, indicating a closer evolutionary relationship. These trees are hypotheses based on evidence and are valuable tools for studying evolution and ancestry. They can be constructed using various methods, including analyzing morphological data or molecular data like DNA sequences.123456

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6 Britannica Sources
  1. phylogenetic tree
  2. How Do You Read Phylogenetic Trees?
  3. evolution - Evaluation of evolutionary trees
  4. evolution - Maximum likelihood methods
  5. evolution - Maximum parsimony methods
  6. evolution - Distance methods

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