8-2 Definitions What science do you see?

 Binary fission: division of a prokaryotic cell into two offspring cells.  Mitosis: a type of cell division that creates cells genetically identical to the original cell  Meiosis: a type of cell division that reduces the chromosome number by half

 Cell Cycle: Repeating set of events that make up the life of a cell  Interphase: the time between cell divisions  Mphase: Mitosis, when the nucleus divides  Cytokinesis: when the cytoplasm and organelles divide

 G1 phase: part of interphase where cells grow in size  S phase: part of interphase where DNA is copied  G2 phase: Growth part of interphase when the cell prepares for division

 Prophase: the first phase of mitosis  Centrosomes: two dark spots containing centrioles, where the spindles come from  Centrioles: cylindrical bodies  Spindle fibers: microtubules that make up the mitotic spindle  Mitotic spindle: pathway used to equally divide the chromosomes

 Kinetochore fibers: attach to the chromosomes  Polar fibers: run from one end of the cell to another

 Metaphase: second phase of mitosis, chromosomes move to the center of the cell  Anaphase: third phase of mitosis, chromosomes begin to move toward opposite poles  Telophase: Fourth phase of mitosis, when nucleus begins to reform in the two new cells

 Cleavage furrow: area that pinches inward to divide the cell into two new cells  Cell plate: In plant cells, this plate equally divides the cell into two offspring cells.