BIO 1140 Lecture Notes - Cyclin-Dependent Kinase, Maturation Promoting Factor, Cyclin B
22 Dec 2012
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Document Summary
The cell cycle involves a period of growth, followed by nuclear division and cytokinesis. The cell cycle allows for an increase in size of the organism, developmental complexity; the diversity of functioning multicellular eukaryotic organisms require strict control of cell division. The cell cycle ultimately results in a mature body composed of different subpopulations of cells. Extends from the end of one mitosis to the beginning of the next mitosis. The cell grows at a stead rate through interphase. G0: a resting phase where the cell has left the cycle and has stopped dividing; it is in a quiescent phase. G1: the cell is metabolically active and continuously grows but does not replicate its. S: dna replication takes place (scheduled dna synthesis = doubling of the chromosomes) Dna synthesis can occur when not in s-phase (unscheduled dna synthesis) This is seen in dna repair, in mitochondria / chloroplast, etc. , and in recombination during meiosis.
