The Process of Cell Division. Learning Objectives Describe the role of chromosomes in cell...
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The Process of Cell Division
Learning Objectives
Describe the role of chromosomes in cell division. Name the main events of the cell cycle. Describe what happens during the four stages of
mitosis. Describe the process of cytokinesis.
Chromosomes
In prokaryotic cells, DNA is packaged into a single, circular chromosome.
ChromosomesIn eukaryotic cells, DNA is packaged into multiple chromosomes.
duplicated chromosome
centromeresister chromatids
supercoils
coils
histone proteins
nucleosome
DNA double helix
Prokaryotic Cell CycleProkaryotes undergo binary fission.
Eukaryotic Cell Cycle
Eukaryotic cells have a more complex cell cycle than prokaryotic cells.
Which Cell Cycle?
bacteria plants
M Phase
Cell division occurs during M phase.
Prophase
The nucleus condenses and chromosomes become visible. The spindle begins to form.
Metaphase
Chromosomes line up at the center of the cell.
centrioles
centromere
chromosome
chromatid
Anaphase
Chromosomes move toward opposite poles.
individual chromosomes
TelophaseThe cell begins to divide into daughter cells.
nuclear envelopes re-forming
Cytokinesis
pinches in the center to form two daughter cells.Cytoplasm
Mitosis OverviewList and describe the stages of mitosis.
Interphase
1
2
3
4
Cytokinesis Prophase
Metaphase
Anaphase
Telophase