Mitosis is immediately followed by cytokinesis, the division of the cell organelles and cytoplasm into two daughter cells. Some cells have cytokinesis happening at the same time as mitosis, while others have a separation of the two processes—something that’s called “endoreplication”, which means there are multiple nuclei within the cells, at least for a period.
MEIOSIS Meiosis is a type of cell division that divides the cell but reduces the number of chromosomes in half, creating four haploid cells called gametes from a single totipotent stem cell. Meiosis happens in all sexually-reproducing single-celled and multicellular organisms (including animals, fungi, and plants). When the cell has errors in meiosis, there is aneuploidy, which is the lack of complete separation between chromosomes in the meiotic process so that some of the haploid cells do not have a complete set of chromosomes, while others have too many. Figure 19 shows what meiosis is like:
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