Interphase is when the DNA duplicates to prepare for mitosis.
Prophase is when the nuclear membrane dissolves, proteins attach to centromeres creating kinetochores, microtubules attach at the kinetochores and the chromosomes move.
Metaphase is when the spindle fibers align chromosomes along the middle of the cell nucleus. The formed line is called the metaphase plate.
Anaphase is when the paired chromosomes separate at the kinetochores and move to opposite sides of the cell.
Telophase is when the new membranes form around the daughter nuclei while the chromosomes disperse and are no longer visible under the light microscope. Cytokinesis may also occur.
The results from the online tutorial are as follows:
Interphase Prophase Metaphase Anaphase Telophase
# Cells 20 10 3 2 1
% Cells 55.6% 27.8% 8.3% 5.6% 2.8%
The differences between the different stages of mitosis are pretty easily determined, as soon as you learn what you're looking for.
The stages:
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