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MITOSIS ANDMITOSIS AND

CYTOKINESISCYTOKINESISA Research Presentation

By Kayla and Rachel

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MitosisMitosis(mi toH sus)

is the second main stage of the cellcycle during which the cellsreplicated DNA divides and twogenetically identical diploiddaughter cells are produced

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STAGES OF MITOSISSTAGES OF MITOSIS

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ProphaseProphase First stage of mitosis during

which the cells chromatin

condenses into chromosomes

The chromosomes appear as Xs

each side of the X is called sister

chromatids. Which are structures

that contain identical copies of

DNA

The structure at the center of the

chromosome where the sister

chromatids are attached is called

centromere.

Centromere ensures that the

copied DNA becomes part of the

daughter cells at the end of thecell cycle.

Spindle apparatus contains

spindle fibers, centrioles and aster

fibers. It is important for moving

and organizing chromosomes

before cell division. Centriolesare not part of the

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MetaphaseMetaphase

Second stage of mitosis in

which motor proteins pull

sister chromatids to thecells equator along the

spindle apparatus.

Metaphase is one of the

shortest stages in mitosis

when completed

successfully it ensures

that the new cells have

accurate copies of the

chromosomes.

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AnaphaseAnaphase The third stage of mitosis

in which sister

chromatids are pulled

apart and microtubules,

along with motor

proteins, move the

chromosomes to opposite

poles of the cell.

Spindle apparatus

begins to shorten which

pulls at the centromere of

each sister chromatids,

causing the sisters to

separate into two

identical chromosomes.

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TelophaseTelophase The last stage of mitosis

in which nucleoli

reappear. Two newnuclear membranes begin

to form, but the cell has

not yet completely

divided.

Chromosomes arrive at

the poles of the cell and

begin to relax or

decondense.

the fourth stage of

mitosis is now complete

and there nuclear

material is divided, the

process of cell division is

not yet complete.

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CytokensisCytokensis Third main stage of the

cell cycle, during which a

cells cytoplasm divides,

creating a new cell.

results in two cells with

identical nuclei.

accomplished by using

microfilaments toconstrict, or pinch, the

cytoplasm.

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LinksLinks

Mitosis andCytokinesis

Mitosis andCytokinesis2

Stages of Mitosis

Stages of Mitosis 2

Stages of Mitosis 3

http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/0072437316/120073/bio14.swf::Mitosis%20and%20Cytokinesishttp://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/0072437316/120073/bio14.swf::Mitosis%20and%20Cytokinesishttp://www.youtube.com/watch?v=VGV3fv-uZYI&annotation_id=annotation_706798&feature=ivhttp://www.youtube.com/watch?v=VGV3fv-uZYI&annotation_id=annotation_706798&feature=ivhttp://www.youtube.com/watch?v=VGV3fv-uZYI&annotation_id=annotation_706798&feature=ivhttp://library.thinkquest.org/C0118084/Gene/Chromosomal_Inheritance/StagesMitosis.htmhttp://www.itg.uiuc.edu/technology/atlas/structures/mitosis/http://teachertech.rice.edu/Participants/dawsonm/cells/Stages_of_Mitosis.htmhttp://teachertech.rice.edu/Participants/dawsonm/cells/Stages_of_Mitosis.htmhttp://www.itg.uiuc.edu/technology/atlas/structures/mitosis/http://library.thinkquest.org/C0118084/Gene/Chromosomal_Inheritance/StagesMitosis.htmhttp://www.youtube.com/watch?v=VGV3fv-uZYI&annotation_id=annotation_706798&feature=ivhttp://www.youtube.com/watch?v=VGV3fv-uZYI&annotation_id=annotation_706798&feature=ivhttp://www.youtube.com/watch?v=VGV3fv-uZYI&annotation_id=annotation_706798&feature=ivhttp://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/0072437316/120073/bio14.swf::Mitosis%20and%20Cytokinesishttp://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::535::535::/sites/dl/free/0072437316/120073/bio14.swf::Mitosis%20and%20Cytokinesis

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Mitosis and Cytokensis QuizMitosis and Cytokensis Quiz

5 Question quiz

http://glencoe.mcgraw-hill.com/sites/0078695104/student_view0/unit2/chapter9/section2/self-check_quizzes-english.htmlhttp://glencoe.mcgraw-hill.com/sites/0078695104/student_view0/unit2/chapter9/section2/self-check_quizzes-english.html