2. Prophase
• The Chromatin in the cell shortens, which causes Chromosomes
(bar-like bodies of tightly coiled Chromatin) to form.
• Each Chromosome is made of up of 2 strands, know as a
chromatid, held together by a small body called a Centromere.
• Then, the Centrioles of the cell start to migrate to opposite ends
of the cell, which builds the mitotic spindles.
• Mitotic spindles – A spindle of microtubules that provide a pace for
attachment and movement of Chromosomes for the later stages of
Mitosis.
• At the end of this phase, the nuclear envelope and nuclei break
down and disappear. Chromosomes have already attaches to the
spindle fibers by their Centromeres.
4. Metaphase
• Chromosomes line up at the center of
the spindles, midway between the
centrioles.
• By the end of Metaphase, a line of
Chromosomes down the middle of the
Cell is seen.
6. Anaphase
• Centromeres that held Chromatids together
split.
• Chromatids slowly move apart to opposite
sides of the cell.
• Chromosomes seem to be pulled by half
Centromeres.
• Anaphase is over when the Chromosomes stop
moving.
8. Telophase
• This phase is essentially Prophase in reverse.
• Chromosomes that just moved to opposite ends of the cell unfold
and become like Chromatin again.
• The Mitotic Spindles break down and disappear.
• Cytokinesis occurs:
• Division of Cytoplasm.
• Cleavage furrow forms, which is a midline of the mitotic spindles
splitting the cell into two parts.
• At the end of the division, there are two daughter cells that grow and
eventually divide again.
• A nuclear envelope forms around each Chromatin.
• Nucleoli appear in each of the daughter nuclei.
