Rebekah Ha Leah Shteynman Marlon Whitney The Cell Cycle

period between cell divisions eukaryotic cells spend most time in includes g1, S, g2 Interphase

first phase of mitosis duplicated chromosomes condense causes nucleolus to disappear spindle microtubules form originate from centrioles new pair forms during interphase near previous pair Prophase

middle phase/stage 2 kinetochores pull toward opposite poles While microtubules lengthen/shorted until chromosome lines up along equator with 1 kinetochore facing each pole sister chromatids separate and are pulled to opposite poles of the cell Metaphase

another phase of mitosis, sister chromatids separate Allows each kinetochore move its chromosome pole ward, nibbling off end of attached microtubule Each pole has a copy of chromosome Polar microtubules grab one another overlapping at equator, lengthen + push on one another forcing poles of cell apart Anaphase

a nuclear envelope forms around each group of chromosomes end stage Spindle microtubules disintegrate, nuclear envelope forms around each group of chromosomes Those revert to extended state, nucleoli reform Telophase