(with Mitosis)
Cell Cycle
 22 hours total
Interphase:
 G1: Cell Growth
 S: DNA Replication
 G2: Preparation for Cell Division
Mitosis:
 Nucleus Divides
 Body Cells
 Mother and daughter cells have the same number of chromosomes
o 46 Chromosomes before and after (human)
Prophase
 DNA condenses into chromosomes
 Nuclear envelope breaks down
Metaphase
 Chromosomes line up in the center of the cell making the metaphase plate
 Spindle fibers attach to the centromere of each chromosome
Anaphase
 The centromeres split
 Chromatids separate and move to opposite ends of the cell
Telophase
 Chromosomes de-condense into DNA
 Nuclear envelope forms
Cytokinesis:
 The rest of the cell divides
Cell Cycle
(with Meiosis)
Interphase:
 G1: Cell Growth
 S: DNA Replication
 G2: Preparation for Cell Division
Meiosis:
 Nucleus Divides
 Sex Cells (Egg or Sperm)
 Daughter cells have half the number of chromosomes as the mother
o 46 Chromosomes before, 23 Chromosomes after (human)
Prophase I
 DNA condenses into chromosomes
 Nuclear envelope breaks down
Metaphase I
 Chromosome pairs line up side by side in center of cell
 Spindle fibers attach to the centromere of each chromosome
Anaphase I
 Chromosome pairs separate
Telophase I
 Nuclear envelope forms
Prophase II
 Nuclear envelope breaks down again
Metaphase II
 Chromosomes line up in the center of the cell
 Spindle fibers attach to the centromere of each chromosome
Anaphase II
 The centromeres split
 Chromatids separate and move to opposite ends of the cell
Telophase II
 Chromosomes de-condense into DNA
 Nuclear envelope forms
Cytokinesis:
 The rest of the cell divides