Final answer:
If a cell divides before completing DNA replication, each daughter cell will have incomplete or missing DNA, leading to genetic abnormalities. DNA replication occurs during the S phase, and it is important for it to be completed before cell division to maintain the integrity of the genetic material.
Step-by-step explanation:
When a cell divides, it is important that each daughter cell receives an identical copy of the DNA. This is accomplished by the process of DNA replication. The replication of DNA occurs during the S phase of the cell cycle, before the cell enters mitosis or meiosis.
If a cell divides before DNA replication is completed, each daughter cell will have an incomplete or missing copy of the DNA. This can lead to genetic abnormalities and other cellular dysfunctions. It is essential for DNA replication to be completed before cell division to maintain the integrity of the genetic material.
During the S phase or the synthesis phase, all the DNA in the cell is replicated. This ensures that each daughter cell receives a complete and identical copy of the genetic material. In the G1 phase or the gap 1 phase, the cell prepares for DNA replication by synthesizing various proteins and enzymes necessary for the replication process.