A process of Eukaryotic 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. This process only deals with the segregation of the chromosomes and organelles into daughter cells. The phases of mitosis are prophase, metaphase, anaphase, and telophase.

Phases of Mitosis:

Chromatin condenses, nuclear envelope dissolves, centrioles divide and migrate. Kinetochores and kinetochore fibers form and the spindle forms.

Mitosis 1

Mitosis 2

Metaphase- The chromosomes (which at this point consist of chromatids held together by a centromere) migrate to the equator of the spindle where the spindles attach to the kinetochore fibers.

Mitosis 3

Anaphase- Begins with the separation of the centromeres, and the pulling of chromosomes to opposite poles of the spindle.

Telophase- When chromosomes reach the poles of their respective spindles, the nuclear envelope reforms, cjromosomes uncoil into chromatin form, and the nucleolus reform. Where there was one cell there are now two smaller cells each with exactly the same genetic infomation. These cells may then develope into different adult forms.

Mitosis 4

Is a special type of cell division that produces gametes with half as many chromosomes.

Binary Fission:
Prokaryote cell division. Prokaryote chromosome is a single DNA molecule that first replicates then attaches each copy to a different part of the cell membrane. When the cell begins to pull apart, the replicate and original chromosomes are separated following cell splitting, there are then two cells of identical genetic composition.

Binary Fission