Category: Science 9

Meiosis

Interphase – Growth and preperation happen, but unlike mitosis there is no DNA replication.

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Prophase 1- Homologous chromosomes pair up, and non-sister chromatids exchange genetic material.

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Metaphase 1- Homologous chromosomes pair up at the equator.

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Anaphase 1- Homologous chromosomeso separate and are pulled to opposite poles by the spindle fibers.

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Telophase 1- One chromosome from each homologous pair is at each pole of the cell.

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Interkinesis- During this time the cell will grow and make protein as in interposed of mitosis. Unlike interposed in mitosis, there is no replication of DNA.

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Meiosis 2- Prophase 2- There is one chromosome of the homologous pair in each cell.

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Metaphase 2- The x shaped chromosomes form a single line across the middle of the cell.

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Anaphase 2- Sister chromosomes move to opposite poles of the cell
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Telophase 2- Spindle fires begin to dissapear, and a nuclear membrane forms around each set of chromosomes.

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Cytokinesis- In cytokinesis the two daughter cells are seperated.

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