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unrooted

7.7

A tree that does not show a single starting point or direction

adjective
/ʌnˈruːtɪd/

Specialized

: no enraizado

Unrooted trees were then constructed by using a maximum likelihood estimation with a Jukes-Cantor model and gamma-distributed rates, and by constructing 1,000 replicates to generate bootstrap support values.

Examples

And PS is one that works with rooted gene trees, Bucky the population tree, and Bucky works with unrooted gene trees and many others as well.
Figure 1 shows the unrooted tree based on alignment of the 11 MPXV reference sequences and the viral genomes from the 23 clinical samples in this study.

Academic text (2014)
An unrooted tree diagram does not specify the direction of any branches.
In ecology, an unrooted representation of a species' relationship can simplify complex divergence patterns.
The biologist created an unrooted chart to show the genetic links among various organisms without indicating ancestral paths.

Antonyms

rooted

3 3.7

Firmly connected to a particular place, idea, or feeling

Surface Forms

unrooted positive

Morphology

unrooted = rooted (transparent) = un + root + ed

The adjective is formed by negating 'rooted' with the common prefix 'un-', directly yielding 'not having a designated root node'.

Etymology

Unrooted combines un- 'not' with root 'starting point', the same idea used for a 'tree' diagram that shows relations. That is why an unrooted tree has no single start or direction and does not show a fixed ancestry.