Multiple choice Continuous elongation of a new DNA strand along one strand of DNA requires the action of DNA ligase as well as polymerase occurs b/c DNA ligase can only elongate 3' → 5' direction occurs on the LEADING strand occurs on the LAGGING strand Reveal answer Fill a bubble to check yourself C Correct answer Explanation The leading strand is synthesized continuously in the direction of the replication fork movement, while the lagging strand is synthesized discontinuously.