n.a segment of DNA that can become integrated at many different sites along a chromosome (especially a segment of bacterial DNA that can be translocated as a whole)
同义词：transposon
英汉双解大词典
jumping gene
1.
N（名词）
a fragment of nucleic acid, such as a plasmid or a transposon, that can become incorporated into the DNA of a cell 跳跃基因