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interspersed repetitive sequences
- Definition
- Copies of transposable elements interspersed throughout the genome, some of which are still active and often referred to as "jumping genes". There are two classes of interspersed repetitive elements. Class I elements (or retroelements - such as retrotransposons, retroviruses, long interspersed nucleotide elements and short interspersed nucleotide elements) transpose via reverse transcription of an RNA intermediate. Class II elements (or DNA transposable elements - such as transposons, Tn elements, insertion sequence elements and mobile gene cassettes of bacterial integrons) transpose directly from one site in the DNA to another.
- Definition Source
- Medical Subject Headings 2015
- Used For
- dispersed repetitive sequences
- jumping genes
- mobile genetic elements
- Spanish
- secuencias repetitivas dispersas