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what is mitosis, and what is the difference between mitosis in plan and animal
with sources PLEASE!!!!

2006-10-02 06:05:40 · 3 answers · asked by Cinderella 3 in Science & Mathematics Biology

3 answers

Excellant site with much information: introductions, stages, Technical Details.
Part of a section from the site listed below.


Mitosis is the process that facilitates the equal partitioning of replicated chromosomes into two identical groups. Before partitioning can occur, the chromosomes must become aligned so that the separation process can occur in an orderly fashion. The alignment of replicated chromosomes and their separation into two groups is a process that can be observed in virtually all eukaryotic cells.

Both the alignment and separation processes are the consequence of the chromosomes interacting with filamentous proteinaceous structures, known as microtubules. The microtubules become organized into a biconical array known as a spindle, which forms early in mitosis, and then disassembles as mitosis nears completion. Mitotic spindles are visible in living cells with the polarizing light microscope. Some of the spindle microtubules become attached to the chromosomes at sites known as kinetochores. The kinetochores cannot be seen with the light microscope, but they reside near the place on the chromosome known as its centromere, which can be observed with the light microscope. There are two kinetochores on each replicated chromosome (one on each chromatid), and when the replicated chromosome splits apart at its centromere at the onset of anaphase, each daughter chromosome possesses one centromere and one kinetochore. The linkages between kinetochores and microtubules are thought to be central in controlling both the positioning of the replicated chromosome at the central portion of the spindle during the alignment phase, and in moving the daughter chromosomes apart after they split at their centromeres. The separation of daughter cells from each other is a process known as cytokinesis, and is separate from mitosis. In cytokinesis, animal and plant cells differ considerably from each other. These differences are the consequence of having or not having a cell wall. Cytokinesis in fungi reveals some similarities with plant cells, and exhibits other features unique to the group.

2006-10-02 06:18:02 · answer #1 · answered by Wicked 7 · 0 0

Try Googling for your answer.

2006-10-02 13:12:44 · answer #2 · answered by Starla_C 7 · 0 0

http://en.wikipedia.org/wiki/Mitosis
http://www.scienceaid.co.uk/biology/genetics/mitosismeiosis.html

2006-10-02 13:14:28 · answer #3 · answered by jasonstroble 3 · 0 0

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