External transcribed spacer

Organization of the eukaryotic nuclear ribosomal DNA tandem repeats.

External transcribed spacer (ETS) refers to a piece of non-functional RNA, closely related to the internal transcribed spacer, which is situated outside structural ribosomal RNAs (rRNA) on a common precursor transcript. ETS sequences characteristic to an organism can be used to trace its phylogeny.

References

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Uses material from the Wikipedia article External transcribed spacer, released under the CC BY-SA 4.0 license.