Mitosis Cell Reproduction.

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Presentation transcript:

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!