Why does DNA replication occur?

DNA replication occurs to ensure that each daughter cell receives an identical copy of the genetic material. Before a cell divides (either in mitosis or meiosis), it must replicate its DNA so that the two new cells have the same set of genetic instructions. This is critical for maintaining the stability of the organism’s genome and for proper cellular function and development. Without DNA replication, cells would not be able to divide properly, leading to incomplete or inaccurate genetic information being passed on.