Mitosis Cell Division

Assists distribution of chromosomes
- contains many fibers each composed of bundles of microtubles are made of tublin protein

- nucleoli dissaper
- duplicated chromosome
- centrosome move away from each other

- organize spindle
MTOC- microtuble organizing center
divides before mitosis

Radial array of short microtubles

A structure of protein associated with specific chromosonal DNA at the centrosome

- nuclear envelope breaks down
- microtubles move towrd center of cell
- some of the microtubles attact to kinectochore jerk chromosome back and forth

- Centrosomes are now at opposite ends of cell
- For each chromosome the kinetchores attach to a sister chromatids
-last about 20 min longest stage
- chromosomes lie on metaphase plate

- shortest stage
- two sister chromatids part

- two daughter cells begin to form
- nuclear envelope arises from the fragments
- chromose becomes less condensed
- Mitosis division of one nucleus into two nuclei is complete

- the division of the cytoplasm is usually well underway
- formation of clevage furrow

- indentation of plama memberance pinches the cell together