Introduction To Mitosis

AP Biology

Phases of Mitosis

Interphase- Not part of Mitosis but the much longer phase before the cell splits.

Prophase- Spindles formed by microtubules.

Metaphase- Centromeres convene along metaphase plate.

Anaphase- Sister Chromatid split and move to opposite sides of the cell.

Telophase- New nuclear envelope is formed using parts of the parent cells nuclear membrane.

Interphase

Interphase

Cell prepares for division. Three stages: G1- Cell Grows. S- Chromosomes replicated. G2- Cell grows and prepares for

division.

Prophase

Prophase

In plant cells only prophase is preceded by Preprophase.

Chromatin condenses into chromosomes.

Spindles begin for form. Motor proteins push Centrosomes

along microtubules to opposite ends of the cell.

Metaphase

Metaphase

Spindles attach to Centromeres and chromosomes convene along Metaphase plate.

Analogous to a Tug of War between people of equal strength.

Anaphase

Anaphase

Proteins that bind sister Chromatid are split.

Sister chromosomes are pulled apart by shortening spindles and move towards their respective centrosomes.

Telophase

Telophase

New nuclear envelope formed from parts of the parent cells nuclear membrane.

Chromosomes are enveloped in new nuclei and are unpacked into chromatin.

Mitosis is now complete.

Bibiliography Photo By Varismovita

http://www.flickr.com/photos/verismovita/3198836134/

Information Provided by:http://en.wikipedia.org/wiki/Mitosis#Interphase

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