Here's a breakdown of what happens during mitosis:
* Interphase: The cell grows, copies its DNA, and prepares for division. This is the longest stage of the cell cycle.
* Prophase: The replicated chromosomes condense and become visible. The nuclear envelope breaks down and the spindle fibers form.
* Metaphase: The chromosomes line up at the center of the cell, attached to the spindle fibers.
* Anaphase: The sister chromatids of each chromosome separate and move to opposite poles of the cell.
* Telophase: The chromosomes reach the poles, the nuclear envelope reforms around each set of chromosomes, and the spindle fibers disappear.
* Cytokinesis: The cytoplasm divides, forming two daughter cells, each with its own nucleus and identical DNA.
Mitosis is essential for:
* Growth and development: It allows multicellular organisms to grow from a single fertilized egg into a complex organism.
* Repair and maintenance: It replaces damaged or worn-out cells in the body.
* Asexual reproduction: In some organisms, it is the primary mode of reproduction.
Key takeaway: Mitosis is the process by which a single cell divides into two identical daughter cells, ensuring the continuity of genetic information.
