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Zoology. Mitosis and biglight phases of embryological development - Essay Example

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Cells, such as those of skin, hair, and muscle, reproduce by means of mitosis. Mitosis is what happens with a eukaryotic cell is separated from the chromosomes within the cell nucleus and is divided into two identical sets of two daughter nuclei. …
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Zoology. Mitosis and biglight phases of embryological development
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"Zoology. Mitosis and biglight phases of embryological development"

Download file to see previous pages Mitosis is divided into these following phases: prophase, prometaphase, metaphase, anaphase and telophase. Prophase is when the chromatin liquefies into a structure known as a chromosome, which allows the chromatin to become visible. Prometaphase is what happens when the nuclear envelope breaks itself into smaller fragments and then disappears entirely. Metaphase takes place when the chromosomes are situated in the center of the cell prior to splitting into the two daughter cell sets. Anaphase is when the chromosomes separate within the eukaryotic cell. The last phase, telophase, is when the stages and effects of prophase and prometaphase are reversed within the eukaryotic cell.

Meiosis takes place when the chromosomes are split into halves, and is an essential part of sexual reproduction. Meiosis has many more complex stages then mitosis, as seen in the following: meiosis 1, prophase 1 (which consists of these further stages: leptotene, zygotene, pachytene, diplotene, diakinesis, and synchronous processes), metaphase 1, anaphase 1, telophase 1, and meiosis II.
In meiosis 1, the homologous chromosomes are separated into two haploid cells. During prophase 1, the pairs of homologous chromosomes recombine with other pairs. The following are the phases of prophase 1: leptotene - each separate chromosome condenses into long threads inside of the nucleus; zygotene - the thread-like chromosomes line up with each other; ...Download file to see next pagesRead More
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