Mitosis: Labeled Diagram
Illustration of the process by which somatic cells multiply and divide.
Mitosis is a process of cell division which results in the production
of two daughter cells from a single parent cell. The daughter cells are
identical to one another and to the original parent cell.
In a typical animal cell, mitosis can be divided into four principals
- Prophase: The chromatin, diffuse in interphase, condenses into
chromosomes. Each chromosome has duplicated and
now consists of two sister chromatids. At the end of prophase, the nuclear
envelope breaks down into vesicles.
- Metaphase: The chromosomes align at the equitorial plate and
are held in place by microtubules attached to the mitotic spindle and to
part of the centromere.
- Anaphase: The centromeres divide. Sister chromatids separate
and move toward the corresponding poles.
- Telophase: Daughter chromosomes arrive at the poles and the
microtubules disappear. The condensed chromatin expands and the nuclear
envelope reappears. The cytoplasm divides, the cell membrane pinches inward
ultimately producing two daughter cells (phase: Cytokinesis).