a. The operation of DNA ligase is only possible in the 3' to 5' direction b. the origin of replication is only at the 5' end of the DNA molecule c. during synthesis, DNA polymerase can only add nucleotides to the 3' end of the new strands. d. the synthesis is only done on one strand at a time 2. Which of the following statements correctly represents the order of the molecules involved in the synthesis of okazaki fragments? see the picture Primase ADN pol I ADN pol III ADN ligase Primase ADN ligase ADN pol III ADN poll Primase ADN pol III ADN poll ADN ligase ADN pol III ADN pol I Primase ADN ligase.