1. Cell Division results in
genetically identical daughter
cells.
Namroo Annapareddy
William Chen
Benjamin Huang
Maggie McCormick

2. The Latin axiom: Omnis cellula e cellula:
“Every cell from a cell.”
The ability of organisms to reproduce their
own kind is one characteristic that best
distinguishes living things from nonliving
matter.

3. The Key Roles of Cell Division!
Cell Division: the reproduction of cells; its
purpose is for reproduction, growth and
development, and tissue renewal
Cell Cycle: the life of a cell from the time it is
first formed from a dividing parent cell until
its own division into two cell
http://www.youtube.com/watch?v=rgLJrvoX_
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5. Cellular Organization of the
Genetic Material
 Genome: a cell’s genetic information, packaged as
DNA
 Eukaryotic chromosomes are made of chromatin, a
complex of DNA and associated protein
 DNA molecules are packaged into chromosomes
 Chromosomes: a threadlike, gene-carrying
structure found in the nucleus

6. Figure 12.3

7. Distribution of Chromosomes
During Cell Division
 When a cell is not dividing, the DNA is preparing for
division.
 When chromosomes are duplicated, it forms sister
chromatids.
 The duplicated chromosome has
a narrow “waist” called the
centromere, where the sisters are
attached.

8. Types of Cell Division
 Mitosis: The division of the
nucleus, and is usually followed
immediately by cytokinesis,
the division of the cytoplasm.
 Meiosis: Produce gametes (egg + sperm cells). Has
1 set of chromosomes, and yields non-identical
daughter cells. This only occurs in the gonads.

9. Video!!
 http://www.youtube.com/watch?v=Q6ucKWIIFmg