Cell Cycle

General information
1. Mitosis is the cellular mechanism by which the nuclear content of eukaryotic cell produces and divides.
2. It results in the formation of two daughter cells from one parent cell.
3. Mitotic cells division occurs in five phases: inter phase, pro phase, meta phase, anaphase and telophase.
4. The ordered events are called the cell cycle.
5. This cycle can be divided into two parts a period of growth and preparation for reproduction called inter phase and reproductive period called mitosis.
6. Mitosis is common to all animals and all plants active during embryonic development in growth in repair of injury and in replacement of body covering at molting, it is also the process.

INTER PHASE
- commonly called the "resting stage"
- genetic material is replicated in preparation for the next division sequence.
- has for sub-phase:G1,G0,S,G2

*G1 Phase
- RNA synthesis, protein synthesis, and cell growth occur.
*G0 Phase
- all the cells activities occur except for reproduction and growth.
* S Phase
- DNA synthesis occur
- the amount of DNA in the nucleus doubles.
*G2 Phase
-DNA synthesis ceases
-RNA synthesis and protein synthesis occur preparation for mitotic division

PRO PHASE
- the nucleus disappears
- chromosomes become distinct
- the halves of each duplicate chromosome (chromatids) remain attached by a centromer

META PHASE

- the chromosomes line up in the center of the cell
- the centromer of each replicates

ANA PHASE
- centromer moce apart, pulling the separated chromatids(now called chromosomes) to opposite ends of the cell.
- the number of chromosomes of each end of the cell equals the original number.

TELO PHASE
- nuclear membrane forms around each end of the cell, spndle fbus disappear
- the cytoplasm compresses and divides the cell in half each new cell contains the diploids number of chromosomes.