Mitosis
Текст на Статията
- the nucleolus and the nuclear envelope are distinct the chromosomes are thread like chromatin
- Prophase (Prepare) The doubled chromosomes condense and shorten and become visible under a microscope. The nuke envelope (membrane) begins to disappear. The mitotic spindle forms.
- metaphase (Middle) The doubled chromosomes line up in the middle of the cell on the mitotic spindle. Nuclear envelope is completely gone.
- Anaphase (Apart) The chromosome strands separete and move toward opposite ends of the cell, pulled by the mitotic spindle. The two sets of chromosomes are identical.
- Telophase (Tear or Two Nuclei) The separated chromosomes arrive at opposite ends of the cell. Mitotic spindle disappears. Two new nuke envolopes form, one around each set of chromosomes. The chromosomes begin to lengthen and become less condensed, no longer visible under microscope.
- The last phase of the cell cycle. This is when the cell divides into two new cells. In animal cells, the cell membrane pinches inward to form two cells
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