trans·po·son 
(trăns-pōzŏn)
(trăns-pōzŏn)n.
A segment of DNA that is capable of moving into a new position within the same or another chromosome or plasmid. Also called jumping gene.
[TRANSPOS(ITION) + -ON1.]
- underlining
- underlip
- under lock and key
- underlying
- undermine
- undermodulate
- undermodulation
- undermost
- underneath
- under no circumstances
- under nose
- undernourish
- undernourishment
- undernutrition
- under oath
- under (one's) belt
- under one's belt
- under (one's) breath
- under one's breath
- under (one's) hat
- under one's hat
- under (one's) wing
- under one's wing
- underpaid
- under pain of