Mitosis & Cell Cycle

By Kayla Bennett & Zoe Wilder


Mitosis- Divison of the nucleus, forms 2 nuclei, each containing a complete set of cells chromosomes

-Chromatids of each chromosome are phhsically moved to opposite sides of the dividing cell, with the help of the spindle

Centroles and individual spindle fibers help move chromosomes apart

The stages of Mitosis are


~longest and takes up half of the total time required to complete Mitosis....during prophase the genetic material inside the nucleus condenses and duplicated chromosomes become visible


~during metaphase,the chromosomes move to the equator of the spindle

~spindle fibers link the chromatids of each chromosome to opposite poles


~during anaphase,the centromeres split

~sister chromatids are pulled apart to opposite poles of the cell as the spindle fibers attached to them shorten


~during telophase, a nuclear envelope forms around the chromosomes at each pole

~2 distant daughter cells are formed. The cells separate as the cells cycle proceeds into the next interphase


~Cytokinesis-division of cytoplasm

~in animal cells, plasma membrane pinches in along the equator (elevate furrow)

~plant cells, cell plate

Cell Cycle

Cell Cycle-a repeating sequence of cellular growth and division

-5 phases

-G (first growth phase)

-S (synthesis phase) cells DNA is copied (at the end of S, each chromosome is made up of 2 chromatids attached at a centromere)

-G2 (second growth phase) prepations for division

-Mitosis (division of nucleus), forms 2 nuclei, each containing a complete set of cells chromosomes

-Cytokinesis (division of cytoplasm)