Cell Cycle The cell cycle consists of three

Cell Cycle The cell cycle consists of three stages. As the cell passes through the cycle it grows and divides. The three stages are: 1. interphase 2. mitosis 3. cytokinesis

Cell Cycle

Interphase • time between cell divisions • longest stage • cell performs its normal functions and its genetic material is copied in preparation for cell division

Mitosis: - the division of the contents of the nucleus Four parts of mitosis 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase

Prophase • chromosomes becomes visible • nuclear membrane dissolves

Prophase

Metaphase • chromosomes line up in the middle of the cell.

Metaphase

Anaphase • centromere splits and sister chromatids separate into daughter chromosomes • each moves toward opposite ends of the cell

Anaphase

Telophase • chromatids unwind a nuclear membrane reforms around the chromosomes at each end of the cell

Telophase

Cytokinesis • Cytoplasm divides, producing two genetically identical daughter cells • Occurs after mitosis

Cytokinesis

Important Terms Chromosomes: the structure in the cell nucleus made up of cell’s DNA, condensed into a structure visible under light microscope Chromatid: one of two identical strands of DNA that make up a chromosome Centromere: structure that holds chromatids together Pg. 44 #1 -5

Mitosis • http: //www. teachertube. com/view. Video. ph p? title=Cell_Division_Mitosis_Dance&vide o_id=77880 • http: //www. allthingsscience. com/video/490 /The-Stages-of-Mitosis • http: //www. learn 360. com/Show. Video. aspx ? Search. Text=mitosis&ID=383244 Mitosis Dance