Here's why:
* DNA holds the genetic instructions: DNA contains the genetic blueprint for the cell.
* Each new cell needs a full set: When a cell divides, each daughter cell needs a complete copy of the DNA to function properly.
* Replication ensures two copies: DNA replication creates an identical copy of the entire DNA molecule, ensuring each daughter cell receives a full set of genetic instructions.
Without DNA replication, cell division would lead to cells with incomplete or incorrect genetic information, leading to problems like mutations and cell death.
