MITOSIS

MITOSIS

• The purpose of mitosis is cell division
• Mitosis follows interphase which is divided into four groups
• Prophase, metaphase, anaphase, and telophase
• Each mitosis cell has to have its own nucleus and DNA
• Two sister chromatids break apart so the cell has 1 chromosome

INTERPHASE

• The purpose of interphase is cell duplication
• By the end of interphase a cell has two full sets of DNA
• Interphase is divided into 3 phases
• Gap1 ( g1), gap2 (g2), and synthesis(s)
• Cells spend a lot of there life in interphase

PHROPHASE

• Chromosomes shrink and are more visible
• The nucleus disappears
• By the end of prophase the centrioles have moved to opposite sides of cell
• While the microtubules moved to the center of the cell
• Then metaphase begins

METAPHASE

• Metphase is the second phase of mitosis
• It's made known by two events
• Chromosomes line up across the center of the cell
• Microtubules connect the centromere of each sister chromatid to the centrioles

TELOPHASE

• Telophase is the last phase of mitosis
• Chromosomes uncoil
• Nuclear membranes go around each pole of the cell
• Microtubules break down and fall apart
• Cytokenesis( not a part of mitosis) begins

CYTOKENESIS

• Is the division of the cytoplasm into two cells
• Cytokenesis Is different in plant and animal cells
• In animal cells the cell membrane forms a trench or furrow
• Plant cells have something known as a cell plate
• Which forms in between the divided nuclei