|insertion element or insertion sequence|
|genetics See transposon a section of DNA that is capable of becoming inserted into another chromosome|
|insertion sequence or insertion sequence|
insertion sequence n.
Any of several discrete DNA sequences that repeat at various sites on a bacterial chromosome, on certain plasmids, and on bacteriophages and that can move from one site to another on the chromosome, to another plasmid in the same bacterium, or to a bacteriophage.