Mitosis Cell Reproduction
Mitosis Notes Asexual Reproduction – offspring are produced that are genetically identical to the parent Mitosis – the asexual reproduction process of cell division
Mitosis Notes During cell division … It is essential that the DNA is replicated The number of chromosomes NEVER changes Each daughter cell gets its own copy of the DNA
The Phases of Mitosis Interphase Prophase Metaphase Anaphase Telophase Cytokinesis Mnemonic Device I mmediatly P lease M eet A t T he C ircus
MITOSIS: Starts with one cell Chromosomes are copied Daughter cells are IDENTICAL to the original cell
Interphase What happens? DNA replicates Cell looks normal
INTERPHASE
Prophase What happens? Nuclear membrane disappears Chromosomes appear Centrioles begin to move
PROPHASE
Metaphase What happens? Spindle fibers line the chromosomes up in the middle of the cell
METAPHASE Chromosomes lined in center of cell Spindle fibers attach
Anaphase What happens? The spindle fibers pull the chromosomes apart at the middle
ANAPHASE Chromosomes pulled to opposite ends of the cell by spindle fibers
Telophase What happens? Nuclear membrane reappears Chromosomes disappear The cell begins to be pinched in the middle
New cell wall is starting to form TELOPHASE New cell wall is starting to form early-TELOPHASE late-TELOPHASE
Cytokinesis What happens? The cell is pinched in half Two identical cells are made
CYTOKINESIS Two new daughter cells that are IDENTICAL to the original cell!