Biology 1001A Chapter Notes - Chapter 8: Dna Ligase, Helicase, Lethal Consequences
10 May 2016
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Read chapter 8. 3 from text: phases and main characteristics of the cell cycle. G1 phase cell function + growth, makes rnas, proteins, other cellular molecules but not dna, varies in length. G0 phase cells not destined to divide immediately enter a shunt from. G1 and re-enter g1 to start dividing again (cell cycle arrest) S phase dna replication and chromosome duplication (including. G2 phase cell growth continues + cell prepares for mitosis, cohesins appear and encircle each pair of sister chromatids. Molecular checks and balances ensure an orderly and timely progression through the cell cycle. Cytokinesis cytoplasm divides by the membrane forming a cleavage furrow, eventually pinching to create 2 cells (animal cells) or by forming a cell plate (plant cells) Internal regulatory controls trigger each phase of cell cycle, ensuring that one phase is completed successfully before the next phase can start: stages and main characteristics of mitosis.
