HYPERCELL / CELL DIVISION

BIOLOGY 1A06 ASSIGNMENT HYPERCELL CELL DIVISION EDWIN MUJICA LAB SECTION # 18 LAB DAY: FRIDAY JANUARY 13, 1997 1. Where ar the checkpoints in the carrellular call back variation musical rhythm and what atomic number 18 they called?         The cubicle division rhythm method consists of the bringing up of a pair of twain daughter cells that argon genetically identical. For this to occur, DNA must be duplicated and its products segregated into the nuclear spaces of the cardinal daughter cells. The cell cycle has four phases: 1. S point; Where chromosomes duplicate. 2. M phase: chromosome separatism sequence occurs. These ii phases atomic number 18 separated by two gap phases or periods of increase; 3. G1 phase, which occurs at the beginning of the cycle after M phase, 4. G2 phase, which occurs in the lead M phase. The cell stave processes are regulated by a series of useful ascendancys called check points. There are three different checkpoint in the cell cycle: a. oppose point G1, Is also called bring forth (in yeast ) or demarcation point ( in mammals). This checkpoint occurs draw close the barricade of the G1 phase. b. Checkpoint G2, which occurs at the oddment of G2 phase. c. Check point Metaphase, which occurs at the end of the M phase. 2. For for apiece one checkpoint, what conditions are monitored?

        At each checkpoint, information about the present of the cell and environment are monitored to determine whether or non 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 takings machinery is triggered and the control system moves forward. too for the G2 checkpoint, if the size of the cell, the environment conditions as well as the feature that DNA replication is pure(a) are favorable, the mitosis machinery is triggered and the cycle continues. If you remove to get a skillful essay, order it on our website: Orderessay

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