Cell Reproduction
Mitosis and Binary Fission
Three
Schemes
Major Events in Mitosis
Vocabulary
• Mitosis = division of the cell nucleus and
its contents
• Cytokinesis = the division of cell
cytoplasm into two identical daughter
cells
• Chromatin = the combination of DNA
and histone proteins
• Diploid = Two copies of each
chromosome, one paternal, one maternal
Chromosomes
in the
Larger
Scheme
Chromosome
Structure




1
2
3
4
–
–
–
–
Chromatid
Centromere
Short arm
Long arm
Telomeres
 Do not code for genes
 Keep ends of chromosomes
from sticking to each
other
 Prevent loss of genes
The Cell Cycle
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Mitosis in Onion Root Tip
Binary Fission
The primary method of
reproduction for
prokaryotes
Does not require a
mate
Is asexual
reproduction
Does not increase the
variation in a population
Binary Fission
Central growth
Apical growth