102 



J. HERBKH'r TAVI.OH 



5' LINKER 



3" LINKER 



Fig. 9. During replication the 3' linkers are assumed to be oi)ened by appropriate 

 enzymes. The two subunits of the chromosome consisting of tlie alternate 5' linkers 

 and the H linkers with the attached DNA chains are then held together only liy the 

 hydrogen bonds in Uic DXA. Two clKiins of adjacenl iikiIccuIcs are assumed to 

 l)egin replication i»y the insertion of a new r>' linker. 



