Phenomena and Processes

Nucleic Acid Repetitive Sequences

Sequences of DNA or RNA that occur in multiple copies. There are several types: INTERSPERSED REPETITIVE SEQUENCES are copies of transposable elements (DNA TRANSPOSABLE ELEMENTS or RETROELEMENTS) dispersed throughout the genome. TERMINAL REPEAT SEQUENCES flank both ends of another sequence, for example, the long terminal repeats (LTRs) on RETROVIRUSES. Variations may be direct repeats, those occurring in the same direction, or inverted repeats, those opposite to each other in direction. TANDEM REPEAT SEQUENCES are copies which lie adjacent to each other, direct or inverted (INVERTED REPEAT SEQUENCES).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Sequences of DNA or RNA that occur in multiple copies. There are several types: INTERSPERSED REPETITIVE SEQUENCES are copies of transposable elements (DNA TRANSPOSABLE ELEMENTS or RETROELEMENTS) dispersed throughout the genome. TERMINAL REPEAT SEQUENCES flank both ends of another sequence, for example, the long terminal repeats (LTRs) on RETROVIRUSES. Variations may be direct repeats, those occurring in the same direction, or inverted repeats, those opposite to each other in direction. TANDEM REPEAT SEQUENCES are copies which lie adjacent to each other, direct or inverted (INVERTED REPEAT SEQUENCES).

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Classification

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Synonyms

21 entry terms
  • Repetitive Sequences, Nucleic Acid
  • DNA Repetitious Region
  • DNA, Selfish
  • Direct Repeat
  • Genes, Selfish
  • Repetitious Region, DNA
  • Repetitive Region
  • Repetitive Sequence
  • Selfish DNA
  • Selfish Genes
  • DNA Repetitious Regions
  • DNAs, Selfish
  • Direct Repeats
  • Gene, Selfish
  • Repeat, Direct
  • Repeats, Direct
  • Repetitious Regions, DNA
  • Repetitive Regions
  • Repetitive Sequences
  • Selfish DNAs
  • Selfish Gene

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Aspects Covered

5 allowable subheadings

Indexed with the subheadings drug effects, genetics, immunology, physiology, radiation effects.

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Indexing Annotation

coordinate with DNA, RNA, or specifics

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History Note

81

MeSH Record

Previous Indexing

  • Base Sequence (1971-1980)
  • DNA (1968-1980)

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AMA Style

References

  1. National Library of Medicine. Nucleic Acid Repetitive Sequences. Medical Subject Headings (MeSH). 2026. Unique ID D012091. http://id.nlm.nih.gov/mesh/2026/D012091
  2. Nucleic Acid Repetitive Sequences. In: Wikipedia. https://en.wikipedia.org/wiki/Repeated_sequence_(DNA)
  3. Nucleic Acid Repetitive Sequences. In: Wikidata. https://www.wikidata.org/wiki/Q424473