HSS 2305 Lecture Notes - Lecture 12: Tumor Suppressor Gene, Cell Division, Wound Healing
29 Nov 2018
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Document Summary
Cell division allows the organism to add new cells for its growth and repair: allows fertilized egg to develop into a complex organism composed of billions of cells, responsible for growth from childhood to adulthood, and tissue repair. Cell cycle differences result from regulation at the molecular level. Liver cells maintain their ability to divide but only when there is a need (wound repair: most specialized cells do not divide at all in a mature human nerve and muscle cells. Instructions essential to cell division are located in genes. In multicellular organisms life begins as a single cell (fertilized egg) and at the time, all cells undergo cellular division controlled by specific genes. The cell cycle interphase (g1, s, and g2 phase), and cell division (mitosis and cytokinesis) set of events that a cell undergoes btwn time its formed to time its divided into two new cells.
