Lesson Overview
10.2 The Process
of Mitosis
Mitosis
– What events occur during each of the four
phases of mitosis?
Mitosis
– What events occur during each of the four
phases of mitosis?
– During prophase, the genetic material inside
the ...
Mitosis
– What events occur during each of the four
phases of mitosis?
– During metaphase, the centromeres of the
duplicat...
Mitosis
– What events occur during each of the four
phases of mitosis?
– During anaphase, the chromosomes separate
and mov...
Mitosis
– What events occur during each of the four
phases of mitosis?
– During telophase, the chromosomes, which
were dis...
Important Cell Structures
Involved in Mitosis
– Chromatid – each strand of a duplicated
chromosome
– Centromere – the area...
Prophase
– During prophase,
the first phase of
mitosis, the
duplicated
chromosome
condenses and
becomes visible.
Prophase
– During prophase,
the first phase of
mitosis, the
duplicated
chromosome
condenses and
becomes visible.
– The cen...
Prophase
– During prophase,
the first phase of
mitosis, the
duplicated
chromosome
condenses and
becomes visible.
– The cen...
Prophase
– During prophase,
the first phase of
mitosis, the
duplicated
chromosome
condenses and
becomes visible.
– The cen...
Metaphase
– During metaphase,
the second phase of
mitosis, the
centromeres of the
duplicated
chromosomes line up
across th...
Metaphase
– During metaphase,
the second phase of
mitosis, the
centromeres of the
duplicated
chromosomes line up
across th...
Anaphase
– During anaphase,
the third phase of
mitosis, the
centromeres are
pulled apart and the
chromatids separate
to be...
Anaphase
– During anaphase,
the third phase of
mitosis, the
centromeres are
pulled apart and the
chromatids separate
to be...
Telophase
– During telophase,
the fourth and final
phase of mitosis, the
chromosomes spread
out into a tangle of
chromatin.
Telophase
– During telophase,
the fourth and final
phase of mitosis, the
chromosomes spread
out into a tangle of
chromatin...
Telophase
– During telophase, the
fourth and final phase
of mitosis, the
chromosomes spread
out into a tangle of
chromatin...
Cytokinesis
– How do daughter cells split apart after mitosis?
Cytokinesis
– How do daughter cells split apart after mitosis?
– Cytokinesis completes the process of cell
division – it s...
– Cytokinesis is the division of the cytoplasm.
– The process of cytokinesis is different in
animal and plant cells.
Cytok...
Cytokinesis in Animal Cells
– The cell membrane is drawn in until the
cytoplasm is pinched into two equal parts.
– Each pa...
Cytokinesis in Plant Cells
– In plants, the cell membrane is not flexible
enough to draw inward because of the rigid
cell ...
The Stages of the Cell Cycle
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Mitosis

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Mitosis

  1. 1. Lesson Overview 10.2 The Process of Mitosis
  2. 2. Mitosis – What events occur during each of the four phases of mitosis?
  3. 3. Mitosis – What events occur during each of the four phases of mitosis? – During prophase, the genetic material inside the nucleus condenses and the duplicated chromosomes become visible. Outside the nucleus, a spindle starts to form.
  4. 4. Mitosis – What events occur during each of the four phases of mitosis? – During metaphase, the centromeres of the duplicated chromosomes line up across the center of the cell. Spindle fibers connect the centromere of each chromosome to the two poles of the spindle.
  5. 5. Mitosis – What events occur during each of the four phases of mitosis? – During anaphase, the chromosomes separate and move along spindle fibers to opposite ends of the cell.
  6. 6. Mitosis – What events occur during each of the four phases of mitosis? – During telophase, the chromosomes, which were distinct and condensed, begin to spread out into a tangle of chromatin.
  7. 7. Important Cell Structures Involved in Mitosis – Chromatid – each strand of a duplicated chromosome – Centromere – the area where each pair of chromatids is joined – Centrioles – tiny structures located in the cytoplasm of animal cells that help organize the spindle – Spindle – a fanlike microtubule structure that helps separate the chromatids
  8. 8. Prophase – During prophase, the first phase of mitosis, the duplicated chromosome condenses and becomes visible.
  9. 9. Prophase – During prophase, the first phase of mitosis, the duplicated chromosome condenses and becomes visible. – The centrioles move to opposite sides of nucleus and help organize the
  10. 10. Prophase – During prophase, the first phase of mitosis, the duplicated chromosome condenses and becomes visible. – The centrioles move to opposite sides of nucleus and help organize the
  11. 11. Prophase – During prophase, the first phase of mitosis, the duplicated chromosome condenses and becomes visible. – The centrioles move to opposite sides of nucleus and help organize the
  12. 12. Metaphase – During metaphase, the second phase of mitosis, the centromeres of the duplicated chromosomes line up across the center of the cell.
  13. 13. Metaphase – During metaphase, the second phase of mitosis, the centromeres of the duplicated chromosomes line up across the center of the cell. – The spindle fibers connect the centromere of each
  14. 14. Anaphase – During anaphase, the third phase of mitosis, the centromeres are pulled apart and the chromatids separate to become individual chromosomes.
  15. 15. Anaphase – During anaphase, the third phase of mitosis, the centromeres are pulled apart and the chromatids separate to become individual chromosomes. – The chromosomes separate into two groups near the poles
  16. 16. Telophase – During telophase, the fourth and final phase of mitosis, the chromosomes spread out into a tangle of chromatin.
  17. 17. Telophase – During telophase, the fourth and final phase of mitosis, the chromosomes spread out into a tangle of chromatin. – A nuclear envelope re-forms around each cluster of chromosomes.
  18. 18. Telophase – During telophase, the fourth and final phase of mitosis, the chromosomes spread out into a tangle of chromatin. – A nuclear envelope re-forms around each cluster of chromosomes.
  19. 19. Cytokinesis – How do daughter cells split apart after mitosis?
  20. 20. Cytokinesis – How do daughter cells split apart after mitosis? – Cytokinesis completes the process of cell division – it splits one cell into two.
  21. 21. – Cytokinesis is the division of the cytoplasm. – The process of cytokinesis is different in animal and plant cells. Cytokinesis
  22. 22. Cytokinesis in Animal Cells – The cell membrane is drawn in until the cytoplasm is pinched into two equal parts. – Each part contains its own nucleus and organelles.
  23. 23. Cytokinesis in Plant Cells – In plants, the cell membrane is not flexible enough to draw inward because of the rigid cell wall. – Instead, a cell plate forms between the divided nuclei that develops into cell membranes. – A cell wall then forms in between the two new membranes.
  24. 24. The Stages of the Cell Cycle
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