Why is mitosis important for organisms?

Mitosis is a crucial process for organisms primarily because it enables growth and tissue repair. During mitosis, a single cell divides to produce two genetically identical daughter cells, allowing for an increase in cell number. This is essential for the growth of an organism, as tissues need to expand in size and replenish cells that may have died or been damaged.

For example, in humans, mitosis is responsible for the growth of muscles and bones throughout development, as well as the repair of tissues after injury. The ability to regenerate and replace cells quickly is vital for maintaining healthy bodily functions and overall organism homeostasis. Therefore, the role of mitosis in growth and tissue repair underscores its significance in the life cycle of multicellular organisms.