1. Cell Reproduction

2. New cells are produced from one preexisting cell
Forms two cells identical to the original cell
Chromosomes – compacted chromatin that becomes tightly packed before cell division
Carries genetic material that is copied and passed from generation to generation.

3. The Cell Cycle

4. Interphase 1. G1 Phase 2. S Phase Cell grows and develops.
Chromosomes are replicated; divide to form identical sister chromatids connected by a centromere.

5. 3. G2 Phase Interphase cont. Make proteins for mitosis
Cell organizes and prepares for cell division.
Centriole pair replicates and prepares to form the spindle fibers.

6. Mitosis
Process by which 2 daughter cells are formed.
Cell spends most of its time in Interphase (G1, S, G2)

7. 1. Prophase
Chromatin coils up into visible chromosomes
Nucleus disappears
Centrioles move to opposite ends of the cell
Spindle fibers begin to form between the centrioles

8. Prophase cont.

9. Prophase cont.

10. 2. Metaphase
Chromosomes become attached to the spindle fibers.
Chromosomes line up in the middle of the spindle fibers.

11. Metaphase cont.

12. 3. Anaphase
Centromeres split apart
Chromatid pairs from each chromosome separate
Shortening of spindle fibers pulls chromatids apart.

13. Anaphase Cont.

14. 4. Telophase (Prophase Reversed)
Begins when chromatids reach the opposite poles
Chromosomes unwind
Spindle breaks down
New nuclei form in each new cell.

15. Telophase cont.

16. Telophase cont.