it has to copy its DNA
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Before a cell divides, it undergoes a process called interphase, during which it grows, replicates its DNA, and carries out normal cellular functions. This ensures that the cell is prepared to divide and pass on its genetic material accurately to the daughter cells.
Because each cell needs its own set of DNA, there must be two sets of DNA present in a cell before it divides into two.
The chromosomes have to split and go to opposite sides of the cell.
it divides in two parts.
The second strand of a chromosome is a copy of the genetic information for that cell. There are 2 strands so that when the cell divides, there is one copy of each chromosome for each offspring cell.
DNA replicates before a cell divides ensures that each daughter cell has a complete set of genetic material They must have an identical set of DNA.