outgroup
- noun
- /ˈaʊtˌɡruːp/
- Specialized
- Pharmacosycea is the outgroup to all other figs and is strictly Neotropical.
- used as an outgroup
Examples
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The VIT dataset was an exception, with several lineages other than the outgroup having high rates.
Academic text (2018) -
Lineage-specific rate variation in each dataset was idiosyncratic, with the most extreme variation in the outgroups.
Academic text (2018) -
I know how to deal with members of plesiomorphic outgroups like you.
Blog text (29) -
Spirometra erinaceieuropaei was used as an outgroup. Scale bar indicates the number of base substitutions per site.
Academic text (2014) -
Puumula virus S and M segments were included as outgroups in the phylogenetic reconstructions.
Academic text (2012) -
After rooting, branches leading to outgroup sequences (HTVMEL5 and Z46900) were removed from the figure to increase its legibility.
Academic text (2012) -
Finally, three outgroup species were included: Lampropholis coggeri, Lampropholis guichenoti, and Pygmaeascincus timlowi, each represented by two samples.
Academic text (2018) -
Finally, the eudicot Arabidopsis thaliana and the basal angiosperm Amborella were included to provide outgroups for comparison.
Academic text (2017) -
We performed the standard clock test for each ortholog, with outgroup removed, using PAUP* v4.0a151 by calculating the ML score for a gene both with and without assuming a clock, and then performing a likelihood ratio test.
Academic text (2018) -
In phylogenetic studies, species like crocodiles often serve as the outgroup for modern birds.
Surface Forms
Morphology
Etymology
Outgroup is a simple compound of out- 'outside' and group 'group', so you can remember it as a group that is 'outside' the main set. In biology, an outgroup is a species used as a reference to show which traits came first and to find the root of the family tree.