polytomy. A node on a phylogeny where more than two lineages descend from a single ancestral lineage. A polytomy may indicate either that we don't know how ...
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Usually, a polytomy means that we don't have enough data to figure out how those lineages are related. By not resolving that node, the scientists who produced ...
The meaning of POLYTOMY is polytomous character or condition. How to use polytomy in a sentence.
Dec 23, 2011 · Polytomy identification in microbial phylogenetic reconstruction ... polytomy, such as long-branch retraction and short-branch contraction, and ...
In a phylogenetic tree, a polytomy is an internal node from which many branches simultaneously descend. Three features of this multi-trunked fan palm ...
Mar 23, 2014 · Polytomies can either represent uncertainty in the data or a lack of information. Discerning whether a polytomy represents uncertainty or lack ...
Feb 28, 2018 · (a) We show an example true species tree with a hard polytomy and two branches with CU lengths 1 and 0.1 (left), and the expected quartet gene ...
Dec 9, 2022 · The term polytomy refers to a specific situation in a phylogenetic tree, where a single internal branch or node (branch point) gives rise to ...
A branch with more than two lineages is a polytomy. The diagrams above can serve as a pathway to understanding evolutionary history. The pathway can be ...