Mitosis is the process of nuclear division. In mitosis, the chromosome number is conserved since the replicated chromosomes are equally distributed to each of the daughter nuclei. Mitosis is followed by the process of cytoplasmic division, known as cytokinesis.
             Before mitosis occurs, Interphase takes place. Interphase is composed of the G1 Phase, S Phase and G2 Phase. G1 is a time of protein synthesis and the chromosomes have not yet replicated. The S phase, where DNA is replicated-an exact copy of the DNA is made. Here, sister chromatids, each containing identical copies of the chromosome's DNA molecule, are formed. Then, the cell enters the G2 phase, where spindle fibers are assembled. Now, the cell is ready to enter mitosis.
             In Prophase, the first stage of mitosis, the nucleus and the nucleolus start to disappear with the aid of certain enzymes. Next, the cell enters Metaphase. Here, the nucleus is gone and the chromosomes line up at the equatorial/metaphase plate. There are kinetochore spindles, which will help split the chromosomes later, and nonkinetochroe spindles. Then, the cell is in Anaphase, where the chromosomes are split. Telophase takes place.
             Meiosis, is a two stage process of cell division that exists in sexually reproducing organisms that results in gametes, which have half the chromosome number of the original cell, unlike mitosis.
             In Meiosis I, Interphase I, where the cell prepares of division, the centrioles have replicated. The cell is now ready to enter Prophase I. Here, the nucleus and nucleolus being to disintegrate, synapsis occurs: the chromosomes move toward each other to form homologous pairs, known as tetrads. Chromosomes now exchange genetic information, the process known as crossing over. The cell, subsequently, enters Metaphase I. The chromosomes line up as tetrads instead of individual chromosomes as in mitosis and spindle fibers attach to the opposite ends of the tetrad. Now ...