CAS NE 102 Lecture 14: Ch. 18 cell cycle
20 Jul 2016
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Document Summary
Cell cycle: cells reproduce by duplicating their contents and dividing into 2 identical daughter cells (each daughter cell receives a complete copy of the entire genome) Cells coordinate their growth with their division (duplicate macromolecules and organelles) Duration varies from one cell type to another. The eukaryotic cell cycle usually occurs in 4 phases. The cell grows continuously in interphase, 3 phases: g1, s, and g2. Dna is replicated in the s phase (s= synthesis) G1 is the gap between m phase and s phase (points in g1 and g2 where the cell decides whether to proceed to next phase or pause to allow more time to prepare) G2 is the gap between s phase and m phase. During m phase, the nucleus divides (process called mitosis) A cell-cycle control system ensures that key processes in the cycle occur in the proper sequence.
