2. The Cell Cycle and Mitosis lab

3. MITOSIS LAB Allium root tip cells

4. MITOSIS LAB

5. Unwinding DNA

6. Every nucleated cell in your body has 46 chromosomes

7. A Chromosome

8. Replication: Centrioles replicate
A single-stranded chromosome replicates into a double-stranded chromosome
Double-stranded chromosomes are joined by centromeres

10. Allium Root tip
Why are we looking in this region?

11. Allium Root tip

12. Allium Root tip

13. (A) Interphase Not a part of mitosis
The cell grows, replicates DNA and prepares for Mitosis

14. Replication:

15. (B) Prophase Centrioles replicate
A single-stranded chromosome replicates into a double-stranded chromosome
Double-stranded chromosomes are joined by centromeres
Centrioles migrate to opposite ends or poles of the cell forming spindle fibers

16. (C) Metaphase

17. The double-stranded chromosomes line up in the middle of the cell.
(C) Metaphase
The double-stranded chromosomes line up in the middle of the cell.

18. The double-stranded chromosomes break at the centromere.
(D) Anaphase
The double-stranded chromosomes break at the centromere.
The daughter chromosomes then move apart to opposite poles with the aid of spindle fibers

19. (E) Telophase Last phase of mitosis
Begins when chromosomes reach the poles
A nuclear membrane forms
Cytokinesis (cytoplasmic division)
Cell “pinches in”
Results in 2 exact daughter cells

20. Citations and Special thanks
First published Oct 98: Modified Aug 05 Copyright © Michael Shaw 2005 (Images and Text)
Joe Saccone Eastchester NY,
If you feel that your information was not sited please contact me and I will update my cite.

21. We love your house can we have it?

22. Plant Mitosis -- Review
Your body is made up of trillions of cells. In some ways, your cells can be very different from each other. For example, they can specialize in a particular function, such as carrying oxygen (red blood cells), absorbing food (intestinal cells),or sensing light (cells in your eyes). In
                                                   
    
See a larger view
                                                   
                                                   
Your body is made up of trillions of cells. In some ways, your cells can be very different from each other. For example, they can specialize in a particular function, such as carrying oxygen (red blood cells), absorbing food (intestinal cells),or sensing light (cells in your eyes). In
                                                   
    
See a larger view
                                                   
                                                   
                                                   
Plant Mitosis -- Review
Interphase                               
Prophase                               
Metaphase                               
Anaphase                               
Telophase