Transcript Division of Somatic Cells

Division of Somatic
Cells
1. Interphase
Known as the resting stage of cell
division.
Has three separate stages within it:
G1 phase- Regular cell growth and
development takes place.
 S phase- DNA replication takes place in
this stage.
 G2 phase- The making of organelles that
are required for cell division.

Cell Cycle
2. Mitosis
Dividing of the nucleus
Has 4 stages:
Prophase
 Metaphase
 Anaphase
 Telophase

Prophase
Chromosomes appear.
Nuclear envelope begins to breakdown.
Centrioles- Tube-like structure in the
cytoplasm.
Spindle- The fibers that attach the
cetromere of the chromosomes to the
centrioles.
Metaphase
Chromosomes line-up in the
middle of the cell.
Anaphase
Chromosomes are pulled apart at the
centromere
One chromatid from each chromosome
goes to opposite sides of the cell.
Telophase
Chromosomes go back into chromatin.
Nuclear envelope re-appears.
Spindle breaks apart and centrioles
diminish.
3. Cytokinesis
The dividing of the cytoplasm
Cell division isn’t complete until the cytoplasm
divides.
Cleavage Furrow: Pinching of the cell
membrane in animals to divide the cytoplasm.
Cell Plate: Structure that forms between two
cells of a plant that develops into the cell wall
and divides the cytoplasm.
Cytokinesis
Summary
Mitosis and cytokinesis result in the
formation of two genetically identical
cells with the same number of
chromosomes.