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).

Descriptor ID	D012091
MeSH Number(s)	G02.111.570.080.708 G05.360.080.708
Concept/Terms	Repetitive Sequences, Nucleic Acid Repetitive Sequences, Nucleic Acid Nucleic Acid Repetitive Sequences Selfish DNA Selfish DNA DNAs, Selfish Selfish DNAs DNA, Selfish DNA Repetitious Region DNA Repetitious Region DNA Repetitious Regions Repetitious Regions, DNA Repetitious Region, DNA Direct Repeat Direct Repeat Direct Repeats Repeat, Direct Repeats, Direct Repetitive Region Repetitive Region Repetitive Regions Repetitive Sequence Repetitive Sequences Selfish Genes Selfish Genes Gene, Selfish Selfish Gene Genes, Selfish

Below are MeSH descriptors whose meaning is more general than "Repetitive Sequences, Nucleic Acid".

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Below are MeSH descriptors whose meaning is more specific than "Repetitive Sequences, Nucleic Acid".