Mitosis Cell Division

Mitosis Mitosis is the process of cell division producing identical daughter cells from the parent cell. Used by single cell organisms to reproduce. Asexual reproduction in organisms that “clone” to reproduce.

Multicellular organisms use mitosis to: Grow, repair and replace worn-out or damaged cells. Mitosis has 4 distinct phases; – Prophase – Metaphase – Anaphase – Telophase

Interphase The normal life cycle of the cell. The Chromatin is duplicated. Makes new organelles Chromosomes are not visible yet.

Prophase- The starting of Mitosis First stage of Mitosis. Sister chromatids become visible. Centriloes move to poles of cell. By end the end the nucleolus disappears. Sister chromatid attach to spindle fibres.

Metaphase- Second Stage Sister chromatids attach completely attach to fibres. Chromatids line up in the center.

Anaphase- Third stage Sister chromatids separate to become individual chromosomes. Once chromosomes are at opposite ends of the cell Anaphase is over.

Telophase- Final Stage Chromosomes uncoil and become chromatin again. Spindle fibres disappear. Nuclear envelopes develop.

Cytokinesis- two new cells Cytokinesis is the formal splitting of cells. Cell membrane pinches in to form 2 cells. Usually happens the same time as telophase.