BIOB11H3 Lecture Notes - Lecture 11: G1 Phase, Cell Division, Cytokinesis

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25 Aug 2021
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Cell division is required for zygote to develop into an organism and is required throughout an organism"s life to replace and renew tissues. Mitosis results in cells that are genetically identical to their parent cells basis for producing new cells. Meiosis results in production of cells with half of the genetic content of the parent basis for producing gametes. Cell cycle: series of distinct stages that a cell passes through between one cell division and the next highly regulated. Interphase can last hours to weeks while the m phase generally lasts ~1 hour in mammalian cells. Three general categories of cells: differentiated cells that do not divide highly specialized cells that remain in their state until they die e. g. neurons, rbcs, muscle cells. Cytoplasmic factors regulate the cell cycle e. g. entry of cell into m phase from the g2 phase is initiated by a protein complex called maturation promoting factor (mpf)

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