Living cells go through a series of stages known as the cell cycle. The cells grow, copy their chromosomes, and then divide to form new cells.
Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies – or ‘replicates’ – its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set. The process of mitosis involves a number of different stages.
Interphase is an important stage in the cell cyle. Changes that occur during interphase prepare a cell for division. Before a cell can divide, it duplicates its DNA exactly. Correct copying of the DNA is very important. It ensures that, after cell division, each new cell gets a complete set of DNA. Interphase is also considered to be the ‘living’ phase of the cell, in which the cell obtains nutrients, grows, reads its DNA, and conducts other “normal” cell functions.
Interphase is split into 3 stages, G1, S, and G2. In G1, the cell gets bigger in preparation for cell division. Phase S is probably the most important since that is when DNA replicates, if you don’t have two copies of the genome (all the genetic info in DNA) , the cell can’t divide. The last phase, G2, is when the cell keeps increasing in mass and making proteins.