1. Mitosis & Cytokinesis
Lecture 2

2. Phases of Mitosis
Prophase
Metaphase
Anaphase
Telophase

3. Prophase Chromatin (DNA) coils to form visible chromosomes
Sister chromatids visible
held together by centromere
Spindle fibers
Disappearing nuclear envelope
Doubled chromosome

4. Section 8.2 Summary – pages 201 - 210
Metaphase
Chromosomes line up in middle of cell
Centromere
Sister chromatids
Section 8.2 Summary – pages

5. Section 8.2 Summary – pages 201 - 210
Anaphase
Centromeres split
sister chromatids pulled apart to opposite sides of cell
Section 8.2 Summary – pages

6. Telophase Two daughter cells form Cells separate
Cells proceed into the next interphase
Nuclear envelope reappears
Two daughter cells are formed

7. Section 8.2 Summary – pages 201 - 210
Cytokinesis
end of telophase
cytoplasm and organelles divide
Occurs differently in plants and animals
Section 8.2 Summary – pages

8. Cytokinesis In Animal Cells
plasma membrane pinches in along the equator to form 2 cells

9. Cytokinesis in Plant Cells
Plant cells have a rigid cell wall, so the plasma membrane does not pinch in.
Cell plate is laid down across the cell’s equator.
A cell membrane forms around each cell, and new cell walls form on each side of the cell plate until separation is complete.

10. Section 8.2 Summary – pages 201 - 210
Results of Mitosis
Unicellular organisms remain as single cells.
In multicellular organisms, cell growth and reproduction result in groups of cells that work together as tissue to perform a specific function.
CellsTissuesOrgansOrgan Systems
Section 8.2 Summary – pages