which cellular function provides evidence for the portion of the cell theory that states all cells come from pre-existing cells

Cell division provides evidence for the portion of the cell theory that states all cells come from pre-existing cells. Through cell division processes such as mitosis or meiosis, a single cell divides into two or more daughter cells, each containing identical genetic material and organelles. This process ensures the continuation of life and the production of new cells, which provides strong evidence that cells arise from pre-existing cells rather than spontaneously generating.