Mitosis and other phases

General
	"nuclear division"
	occurs in all somatic cells
		body cells
	Importance
		produces two identical daughter cells
	4 phases
		prophase
		metaphase
		anaphase
		telophase
Prophase
	centrioles begin to migrate towards poles(animal)
	spindle fibers(asters) begin to form from
		centriole(animal)
		organizing center(plant)
	chromatin condenses into chromosomes
	spindle fibers elongate
	nucleolus dissolves
	nuclear membrane dissolves
	chromosomes attach to spindle fibers at the kinetochore fibers
Metaphase
	spindles are complete
	centrioles are at the poles
	chromosomes at equator
Anaphase
	centromere divides
	chromatids are separate chromosomes
	chromosomes move to poles
		no one knows how they move
			pulled by spindles
			repel each other
			as spindles dissolve, they move
	spindles dissolve behind chromosomes
Telophase
	chromosomes at poles
	spindles have disappeared
	chromosomes uncondense into chromatin
	nuclear membrane reforms
	nucleolus reforms
	cytokinesis begins
Cytokinesis
	division of the cytoplasm
	each daughter cell gets approx. 1/2
		organelles
		cytoplasm
	animal cells
		form
			furrows
			cleavage
			cleavage furrows
		pinch in
	plant cells
		form
			division plate
			cell plate
			equatorial plate
Daughter cell stage
	new cells produced
	"mini me's " of mother cell
		smaller
		same number of chromosomes
		same genetic material

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