A lysogenic bacterium is one which contains in its genome
of a virus
which is lying dormant
, passively letting itself be replicate
d by the bacterium whenever the bacterium replicates its own genome (a lysogenic virus
). However, the virus is able to reactivate and destroy the bacterium at any time (it becomes a lytic virus
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.