What is the function of mitosis in an organism such as a human? cite source(s) used (2 pts)?

When cells get too large, they not cannot properly expel waste or bring in enough nutrients, and so they begin to fail. In organisms, especially humans, mitosis divides the cells. 

Interphase: cell is growing and going through normal functions
Mitosis: cell's genetic material and nucleus divide
Prophase: chromatin condenses, nucleus breaks down, centrioles move to opposite sides, spindle forms and pulls sister chromatids apart
Metaphase: spindle fibers move to the middle of the cell
Anaphase: sister chromatids separate, spindle shortens, pulling chromatin to opposite sids
Telophase: chromosomes reach opposite sides and uncoil,nuclear membrane forms around genetic material again
Cytokinesis: division of the cytoplasm 
End Result: two genetically identical cells