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.

Annotation

general or unspecified; prefer specifics

DUI

D020071 MeSH Browser

CUI

M0029779

Previous indexing

DNA Transposable Elements (1980-1998); Repetitive Sequences, Nucleic Acid (1981-1998)

History note

1999; for MOBILE GENETIC ELEMENTS use DNA TRANSPOSABLE ELEMENTS 1986-1998; for SELFISH DNA use DNA (1983-2003)

Public note

1999; for MOBILE GENETIC ELEMENTS see DNA INSERTION ELEMENTS 1986-1998; for SELFISH DNA see DNA (1983-2003)