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Cell Growth, Division and Reproduction (Asexual Reproduction (MITOSIS
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Cell Growth, Division and Reproduction
Asexual Reproduction
MITOSIS
Binary fission
Prophase
·Material inside the nucleus condenses and duplicated chromosomes become visible, a spindle forms
Metaphase
·Centromeres of duplicated chromosomes line up across the the center of the cell. Spindle fibers connect the centromere to the poles of the spindle
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Sexual Reproduction
MEOSIS
1
·Each chromosomes makes an exact copy of itself, forming chromatids. Chromosomes thicken and shorten causing the nuclear membrane to dissapear.
2
·Chromosomes made up two identical chromatids. Similar chromosomes pair with one another at the equator of the cell.
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5
·Now, each cell contains one member of each homologous chromosome pair. Chromosomes are not copied again between the two cells divisions
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7
·Chromatids pull apart and move to opposite ends of the cell, nuclear membrane forms around the separated chromosomes. Cell divides.
8
·Four new cells are formed, each one of them has half the number of chromosomes present in the original cell.
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