Final answer:
DNA replication begins at sequences called origins, not promoters, initiators, or Okazaki fragments, which are short sequences on the lagging strand.
Step-by-step explanation:
DNA replication begins at sequences called origins. These are specific DNA sequences where the replication process starts. Okazaki fragments, on the other hand, are short stretches of DNA found on the lagging strand, which is synthesized in small segments moving away from the replication fork. The leading strand is synthesized continuously in the direction of the replication fork. Replication initiates with the unwinding of the DNA double helix by enzymes, such as helicase, creating a replication fork where DNA polymerases can begin adding nucleotides.