Introduction to Mitosis
Mitosis is a fundamental process of cell division where a single parent cell divides into two identical daughter cells. This process is crucial for growth, repair, and reproduction in all multicellular organisms.
The stages of mitosis begin with interphase, followed by four main phases: prophase, metaphase, anaphase, and telophase. Each stage plays a specific role in ensuring accurate cell division.
Definition: Mitosis is the process of cell division resulting in two genetically identical daughter cells.
Highlight: Mitosis is essential for growth, repair, and reproduction in multicellular organisms.
Prophase
Prophase mitosis is the first phase of mitosis. During this stage, chromatin condenses into visible chromosomes. These chromosomes are composed of two identical sister chromatids held together at the centromere.
Vocabulary: Chromatin - The loosely structured form of DNA and proteins in the nucleus when the cell is not dividing.
Metaphase
Metaphase of mitosis is the second phase. In this stage, chromosomes align at the center of the cell. They attach to spindle fibers and position themselves in the middle of the cell, forming what's known as the metaphase plate.
Example: Imagine the chromosomes lining up like soldiers at attention along the cell's equator.