bio.. .o


what are the four phases of mitosis


prophasemetaphaseanaphase telephase


what is the longest stage of mitosis


prophase


describe what happens to the chromatin, nuclear membrane & nucleolous, and the spindle during prophase


chromatin: condenses into chromosomesnuclear membrane & nucleolous: disappearspindle: forms


what creates the spindle?


protein fibers form between the two centrioles


what kind of structure is a spindle


fanlike


what will the spindle do during mitosis


move the chromosomes


what happens during metaphase


the chromosomes attach to the spindle and move to the equator of the cell


what happens during anaphase


the centromeres divide and the sister chromatids move to the opposite poles


what happens during telephase


new nuclear membranes form around each set of chromosomes, the nucleolus reappears and the spindle breaks down


describe animal cytokinesis


the cell membrane is drawn inward until the cytoplasm is divided into 2 nearly equal parts


describe plant cytokinesis


a cell plate forms between the 2 nuclei and divides the cell into 2 parts. the cell plate becomes the new cell wall