Final answer:
DNA replication is important for cell division as it ensures each daughter cell receives an identical copy of the DNA. If cell division happens before replication is completed, genetic abnormalities can occur.
Step-by-step explanation:
DNA replication is an essential process that occurs before cell division. It ensures that each daughter cell receives an identical copy of the DNA. If cell division occurs before DNA replication is completed, each daughter cell would not have a complete set of genetic information, leading to genetic abnormalities.