Mitosis.

Takes one cell and replicate it into four cells each with half of the original cells genetic information
Takes two cells one from each parent and replicates it into four genetically unique cells
Takes one cell and replicate it into two genetically unique cells
Takes one cell and replicated into two genetically identical cells

Mitosis is a type of cell division that refers to the process of replicating a single cell into two genetically identical cells. It occurs in various organisms and is a vital process for growth, repair, and asexual reproduction.

During mitosis, a cell undergoes a series of stages: prophase, metaphase, anaphase, and telophase. In prophase, the cellular material condenses and the nuclear membrane disintegrates. The chromosomes, which contain the genetic information, become visible. In metaphase, the chromosomes align along the equator of the cell. Anaphase follows, where the sister chromatids separate and move towards opposite ends of the cell. Finally, in telophase, two new nuclei form, completing the division of the genetic material.

Ultimately, mitosis results in two daughter cells that are genetically identical to the original parent cell. This process is crucial for growth and maintenance of multicellular organisms, allowing for the development and renewal of tissues and organs.