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A sister group or sister taxon is a term used to describe the closest relatives of an organism (or other taxon) in a phylogenetic tree.[1] It is a term in cladistics.




A



B




C



The sister group of organism A is B. The sister group of the clade B+A, is C.

References

  1. ^ Eernisse, D.J. "Introduction to phylogeny: what is a sister taxon?". Biology 404 - Evolution. Department of Biological Science, California State University, Fullerton. Retrieved 4 January 2012. 



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Dino bird h This article is part of Project Evolution, a All Birds project that aims to write comprehensive articles on each evolutionary term related to birds.
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