BIOL 1107 Lecture Notes - Lecture 12: Wound Healing, Cytokinesis, Mitosis
Document Summary
In eukaryotes, most dividing cells go through a cycle that consists of four phases. After chromosomes are copied during s phase, they are moved to the middle of the cell during m phase (mitosis). One chromosome copy is distributed to each of two daughter cells. Mitosis and cytokinesis produce two cells that are generally identical to the parent cell. Progression through the cell cycle is carefully monitored. In multicellular organisms, uncontrolled cell division may lead to cancer. Different types of cancer result from different types of defects in control over the cell cycle. Cells arise through the division of preexisting cells. There are two types of cell division; mitosis and meiosis. Both forms are usually accompanied by cytokinesis. The cytoplasm of the cell divides into two distinct daughter cells. Mitosis and cytokinesis are responsible for three key events in multicellular eukaryotes: Nervous system hasn"t changed in number, they don"t divide but skin does.