Answer
Mitosis is the process of cell division that helps an organism grow in size. During mitosis, the chromosomes in the nucleus are replicated and then divided into two identical sets, which are then distributed into two daughter cells. Figure 15-8 shows the structures visible during each stage of mitosis: Prophase, Metaphase, Anaphase, and Telophase. In Prophase, the chromosomes condense and become visible. In Metaphase, the chromosomes line up in the middle of the cell. In Anaphase, the chromosomes are pulled apart and move to opposite sides of the cell. In Telophase, the chromosomes decondense and the cell divides into two daughter cells.