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Polytomy
Multifurcated node of a phylogenetic tree / From Wikipedia, the free encyclopedia
An internal node of a phylogenetic tree is described as a polytomy or multifurcation if (i) it is in a rooted tree and is linked to three or more child subtrees or (ii) it is in an unrooted tree and is attached to four or more branches.[1][2] A tree that contains any multifurcations can be described as a multifurcating tree.
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For other uses, see polychotomy.
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