Meiosis is the form of cell division that a diploid cell undergoes to create two haploid daughter cells. In the human body this process is used to produce gametes such as sperm, it is organized into two steps called meiosis 1 and meiosis 2. In meiosis 1 the cell undergoes the 4 steps of mitosis; prophase, metaphase, anaphase, telophase, with small differences applied. In prophase, the chromosomes begin to condense while aligning with their specific homologue partner. The chromosomes trade genetic information in a process call crossing over, after crossing the mitotic spindle begins to form, capturing the chromosomes in preparation of metaphase. Now in metaphase, the homologue pairs are aligned at the metaphase plate in a random orientation. As the cell progresses into anaphase, the pairs are pulled apart to opposite sides of the cell, the chromatids remain together unlike in mitosis. Finally, in telophase the chromosomes have been fully separated and a nuclear membrane develops, forming two new nuclei. Cytokinesis is completed and two new daughter cells have been formed. In some cells the formation of the nuclear membrane is skipped if it is intended for the cells to undergo another round of division. The resulting cells from meiosis 1 are all haploid, but they still contain two sister chromatids. As meiosis progresses into meiosis 2, the 2 daughter cells undergo a simplified version of meiosis 1 to create 4 cells daughter cells. Once all 4 steps have been completed, the 4 daughter cells will only contain chromosomes with one chromatid. It is this process that allows for sexual reproduction to exist, the single chromatids are able to connect with one another to form complete chromosome containing genetic information from two sources.

References:

https://www.khanacademy.org/science/biology/cellular-molecular-biology/meiosis/a/phases-of-meiosis