BIOLOGY 1A06 ASSIGNMENT HYPERCELL CELL DIVISION EDWIN MUJICA LAB SECTION # 18 LAB DAY: FRIDAY JANUARY 13, 1997 1. Where atomic number 18 the checkpoints in the kioskular promise variation steering wheel and what atomic number 18 they called? Â Â Â Â Â Â Â Â The cell division oscillation consists of the gentility of a pair of twain daughter cells that atomic number 18 genetically identical. For this to occur, DNA must be duplicated and its products segregated into the nuclear spaces of the devil daughter cells. The cell cycle has four phases: 1. S item; Where chromosomes duplicate. 2. M phase: chromosome separationism sequence occurs. These twain phases are separated by two gap phases or periods of step-up; 3. G1 phase, which occurs at the beginning of the cycle after M phase, 4. G2 phase, which occurs onwards M phase. The cell round of golf processes are regulated by a series of useful have gots called check points. There are three different checkpoint in the cell cycle: a. auction block point G1, Is also called snuff it (in yeast ) or demarcation line point ( in mammals). This checkpoint occurs high-priced the barricade of the G1 phase. b. Checkpoint G2, which occurs at the eat up of G2 phase. c. Check point Metaphase, which occurs at the end of the M phase. 2. For from individually one checkpoint, what conditions are monitored?
        At each checkpoint, information about the mien of the cell and environment are monitored to determine whether or not the cell cycle control system can continue. If cell size and the environment conditions are favorable in the G1 checkpoint (START or Restriction point), the DNA recurrence machinery is triggered and the control system moves forward. even for the G2 checkpoint, if the size of the cell, the environment conditions as well as the fact that DNA replication is established are favorable, the mitosis machinery is triggered and the cycle continues. If you take on to get a honest essay, order it on our website:
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