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Mitosis & Meiosis

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Calista Pullin

on 8 November 2013

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Transcript of Mitosis & Meiosis

Cytokinesis
In meiosis I, two daughter cells are split by cytokinesis and produced with 46 chromosomes.
In meiosis II, four daughter cells are split by cytokinesis and produced with 23 chromosomes
Mitosis & Meiosis
Prophase:


In prophase, the chromosomes condense. The "nuclear envelope" breaks down and spindle fibers form at opposite ends of the cell.
Mitosis:
Metaphase:
In metaphase, the spindle fibers fully develop and the chromosomes align in the middle.
Anaphase:
In anaphase, the sister chromatids separate and begin moving to opposite ends of the cell. At the end of anaphase, each end of the cell contains a complete set of chromosomes.
In telophase, the chromosomes are moved off into distinct new nuclei in the daughter cells and the nuclear membrane reforms.
Telophase:

Prophase I:
Plasma Membrane
Meiosis I
Nuclear Envelope
Metaphase I:
Spindle
Fibers
Centrioles
Sister Chromatids
Chromatid
In prophase 1, the chromosomes condense. The "nuclear envelope" breaks down and spindle fibers form at opposite ends of the cell.
In metaphase I, the spindle fibers fully develop and the chromosomes align in the middle.
In anaphase I, the sister chromatids separate and begin moving to opposite ends of the cell. At the end of anaphase, each end of the cell contains a complete set of chromosomes.
Anaphase I:
Telophase I:
In telophase I, the chromosomes are moved off into distinct new nuclei in the daughter cells.
Prophase II:
Meiosis II
Metaphase II:
Interphase does not happen again therefore, no new chromosomes are made. The chromosomes condense. The "nuclear envelope" breaks down and spindle fibers form at opposite ends of the cell.
In metaphase II, the spindle fibers fully develop and the chromosomes align in the middle.
Anaphase II:
In anaphase II, the sister chromatids separate and begin moving to opposite ends of the cell. At the end of anaphase, each end of the cell contains a complete set of chromosomes.
Telophase II
In telophase II, the chromosomes are moved off into distinct new nuclei in the daughter cells.
Cytokinesis
The division of the cytoplasm to make two distinct cells.
Plasma membrane
Nuclear envelope
Spindle fibers
Centrioles
Sister chromatids
Chromatid
Chromosome
Chromosomes crossing over occurs in Prophase I
homologous
pair
Full transcript