mitosis
Текст на Статията
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- Mitosis is the process in cell division where the nuclei divide into two different nuclei. Each has a different set of chromosomes. Mitosis is four different phases prophase, metaphase, anaphase, and telophase. it is needed for growth repair, and development
- What Is Mitosis
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- Metaphase
- each cell has 46 chromatin
- cell does normal things like making proteins
- nucleus
- Interphase
- Anaphase
- before mitosis the chromatin has to replicate itself..
- Chromatin
- the stringy pieces of DNA in the nucleus are called chromatin
- the chromosomes condense or break down and become visible and Each half of the chromosome is a sister chromatoid they are identical. During prophase, the nucleus disintegrates. In this phase, you can see spindle fibers.
- Prophase
- Telophase
- in metaphase, the chromosomes line up single file in the middle of the cell. Each half points in different directions. The spindle fibers are in the center of each chromosome.
- sister chromatids split up and move toward opposite poles. Each half of the chromosone are pulled toward the point where the spindle fiber comes togther.
- each newly formed cell has their own nucleus
- in telophase two diploid daughter cells are being formed
- the chromosomes uncoil to make chromatin again
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