DNA replicates before a cell divides to give a complete set of genetic instructions to each daughter cell. Semiconservative replication means that only one strand of DNA molecule is newly formed. The other stand is original DNA from the parent cell.
If a cell were to begin meiosis without duplicating its DNA, the two resulting cells would have insufficient DNA to develop properly, as there would only be one copy of each chromosome in the first cell, so as division occurs, half of the DNA needed would go to one cell, and half to the other. This means that, as previously stated, there would be insufficient data to develop properly, meaning there would be insufficient data to function. This would most likely result in the cells dying off.
Since the cell is dividing it needs two copies of it's DNA. One is kept by the parent cell and the other is passed to the daughter cell So this process of duplicating DNA is very important, because the daugher DNA cell will likley die.
Cells will duplicate or copy their DNA right before they divide. The process of cell division is called mitosis. Since the cell is dividing it needs two copies of its DNA - one is kept by the parent cell and the other is passed to the daughter cell. ... So this process of duplicating DNA is very important.