bin ation ▁mach in ery . ▁This ▁results ▁in ▁numerous ▁copies ▁of ▁the ▁gen ome ▁being ▁present ▁on ▁a ▁single ▁linear ▁DNA ▁mole c ule ▁called ▁a ▁conc atem er . ▁The ▁end ▁of ▁the ▁conc atem er ▁is ▁cut ▁a ▁specific ▁site ▁called ▁the ▁pac ▁site ▁or ▁pack aging ▁site . ▁This ▁is ▁followed ▁by ▁the ▁pack ing ▁of ▁the ▁DNA ▁into ▁the ▁heads ▁till ▁they ▁are ▁full . ▁The ▁rest ▁of ▁the ▁conc atem er ▁that ▁does ▁not ▁fit ▁into ▁one ▁head ▁is ▁separated ▁and ▁the ▁mach in ery ▁begins ▁pack ing ▁this ▁into ▁a ▁new ▁head . ▁The ▁location ▁of ▁the ▁cut ▁is ▁not ▁sequence ▁specific . ▁Each ▁head ▁holds ▁around ▁ 1 1 0 kb p ▁of ▁DNA ▁so ▁there ▁is ▁a ▁little ▁more ▁than ▁one ▁complete ▁copy ▁of ▁the ▁gen ome ▁( ~ 9 0 kb p ) ▁in ▁each ▁head , ▁with ▁the ▁ends ▁of ▁the ▁str and ▁in ▁each ▁head ▁being ▁identical . ▁After ▁inf ect ing ▁a ▁new ▁cell ▁this ▁terminal ▁redund ancy ▁is ▁used ▁by ▁the ▁host ▁recom bin ation ▁mach in ery ▁to ▁cycl ize ▁the ▁gen ome ▁if ▁it ▁la cks ▁two ▁copies ▁of ▁the ▁lo x ▁loc us . ▁If ▁two ▁lo x ▁sites ▁are ▁present ▁( one ▁in ▁each ▁termin ally ▁redundant ▁end ) ▁the ▁cycl ization ▁is ▁carried ▁out ▁by ▁the ▁cre ▁recom bin ase . ▁ ▁Once ▁the ▁complete ▁vir ions ▁are ▁assemble d , ▁the ▁host ▁cell ▁is ▁l ys ed , ▁re le asing ▁the ▁vir