Meiosis Compare And Contrast

Meiosis and mitosis are forms of nucleus division in eukaryotic cells that occur after the Interphase or DNA replication of cell division occurs (OpenStax, 2013). Mitosis and meiosis are similar in their function to split the cell nucleus and form new cells however, the process for meiosis is much more involved. The process of meiosis is broken into two phase Meiosis I and Meiosis II with each having similar sub-phases where mitosis is one phase broken down into sub-phases similar to Meiosis II. The reason for meiosis to have two phases is that there are actually two separate cell divisions that will occur over meiosis. In Meiosis I the sub-phases consist of the following six phase. Prophase I is when a homologous pairs of chromosomes or sister

In mitosis there are the same phases as the sub-phase of Meiosis II but the naming of the sub-phases for Meiosis II includes the Roman numeral II after each one. The difference between Meiosis II and mitosis is that in Meiosis II the process is occurring in two cells at the same time versus one cell in mitosis. Mitosis occurs in the following phases; prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis. During mitosis prophase the sister chromotids are formed by the individual chromosomes connecting together at the centromere. In prometaphase of mitosis the sister chromotids are held together at the centromere and the microtubules have attached to the individual kinetochores then the sister chromotids line up at the equator of the cell during the metaphase. During the anaphase the sister chromatids are pulled apart toward the poles of the cell where they will arrive during the telophase. Finally, during cytokinesis the cell divides forming two genetically identical diploid cells to the original diploid cell. In Meiosis II the result will be four different haploid cells that are genetically different from the original cell and each other. This significant difference in meiosis and mitosis means there are genetic variation formed during meiosis but not during