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Phylogenetic tree

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Phylogenetic Tree

A phylogenetic tree is a hypothetical reconstruction of lines of descent. Both creationary and evolutionary biologists use phylogenetic trees, because both acknowledge at least some degree of common descent. However, while evolutionists believe that all life stems from a single, universal phylogenetic true of common descent, creationists believe that life stems from a number of independent phylogenetic trees -- a model known as baraminology.

It is difficult to reconstruct phylogenetic trees. Different approaches include:

  • Morphology: Scientists often conclude species are related simply because they share physical characteristics. Thus, because they conclude that chimps are physically the most similar to humans, they conclude that the two species are most closely related. This is a logical fallacy, however. Morphological similarity is neither a necessary condition nor a sufficient condition of common descent;
  • Analysis of genetic similarity: However, recent studies[1] have shown that convergent evolution can result in completely incorrect conclusions;
Pedigree of Man, a lithography by Ernst Haeckel (1874)
Phylogenetic Tree
Charles Darwin's notebook showing sketch of phylogenetic tree. Note the words I think at the top of the notebook.
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