mitosis

• during interphase cells are in a state of growth and dna replication in prep for mitosis
• interphase is the longest phase of the cell cycle, lasting from 10-24 hours
• gap 1 (G1) - cell grows and prepares to divide by synthesizing proteins needed during S phase
• S phase - DNA replicates so that each daughter cell will have an exact copy of genetic material
• prophase - chromatin condenses into visible x shaped chromosomes, nuclear envelope breaks down, centrioles move towards opposite poles of cell, spindle fibers form between them
• metaphase - chromosomes line up along equator of cell, attached to spindle fibers at the centromere
• anaphase - sister chromatids separate and move toward opposite ends of cell pulled apart by shortening spindle fibers
• telophase - new nuclei begin forming around separated sets of chromosomes, spindle fibers disappear, cytoplasm divides
• cytokinesis - division of cytoplasm occurs through pinching or furrowing
• binary fission- circular DNA replicates , cell elongates, dna moves to opposite poles of the cell, cytoplasm pinches and new cell wall is formed