The Cell Cycle 
& 
Cell Division 
(Mitosis)
The Cell Cycle 
http://www.nobel.se/medicine/laureates/2001/press.html
Animated Cycle 
http://www.cellsalive.com/cell_cycle.htm
MITOSIS
Mitosis 
The process of cell division which results 
in the production of two “daughter” cells 
from a single parent cell. 
The daughter cells are identical to one 
another and to the original parent cell.
The Stages of Mitosis
1st: Interphase 
The cell prepares for division 
‱ Chromosomes 
are copied 
Centromere
Interphase 
Animal Cell Plant Cell 
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Prophase 
The cell prepares for division 
‱ DNA condenses to 
form chromosomes 
‱ Centrioles appear 
‱ Spindle fibers form 
between the poles
Prophase 
Animal Cell Plant Cell 
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Metaphase 
The cell prepares chromosomes for division 
‱ Spindle fibers 
attach to the 
chromatids 
‱ Chromosomes line 
in the midline of the 
cell (the equator)
Metaphase 
Animal Cell Plant Cell 
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Anaphase 
The chromosomes divide 
‱ Chromatids 
separate and 
begin to move to 
opposite ends of 
the cell.
Anaphase 
Animal Cell Plant Cell 
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Telophase 
‱ Two new nuclei 
form 
‱ Chromosomes 
appear as 
chromatin (threads 
rather than rods) 
‱ Mitosis ends
Telophase 
Animal Cell Plant Cell 
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Cytokinesis 
Two daughter cells are formed 
‱ Cell membrane 
pinches create two 
daughter cells – 
each with its own 
nucleus and 
identical 
chromosomes
The cell cycle and mitosis

The cell cycle and mitosis