The Cell Cycle and Mitosis Phases
Your body creates millions of new cells every day through a carefully orchestrated dance called the cell cycle. Before mitosis even begins, cells go through Interphase, which includes G1 (first growth phase), S (DNA synthesis and duplication), and G2 (second growth phase).
Mitosis is the actual division process that creates two identical daughter cells, each with a complete set of chromosomes. This process follows four key phases that are easy to remember with the acronym PMAT: Prophase, Metaphase, Anaphase, and Telophase.
During Prophase, the cell prepares for division as the nuclear membrane disappears and chromosomes become visible. These chromosomes consist of two identical sister chromatids connected at the centromere. In Metaphase, chromosomes line up neatly along the cell's equator, with each sister chromatid attaching to its own spindle fiber.
💡 Think of mitosis like making an exact photocopy of a book - the original doesn't change, but now you have two identical copies where before you had one!
As the cell enters Anaphase, the centromeres split, and sister chromatids separate as they're pulled toward opposite poles of the cell. This critical movement ensures each new cell will receive identical genetic information.
