DIVISIÓN CELULAR (I) CICLO CELULAR MITOSIS
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Transcript of DIVISIÓN CELULAR (I) CICLO CELULAR MITOSIS
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DIVISIÓN CELULAR (I)
CICLO CELULAR
MITOSIS
TEMA 11
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Ciclo celular 1.swf
control ciclo celular.swf
Le cycle cellulaire.swf
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División delnúcleo
(mitosis)
División delCitoplasma(citocinesis)
Profase Metafase Anafase Telofase
Comprende
Dividida en
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Membranaplasmática
Nucleolo
Cromatina
Envolturanuclear
Citoplasma
Centríolos
Microtúbulosdel áster
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Comienza a desaparecer laenvoltura nuclear
Empiezan avisualizarse loscromosomas
Los centriolosvan a los polos opuestosde la célula
Se empieza aconstituir elhuso mitótico
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Los cromosomasse colocan en elecuador
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Las cromátidashermanas de cadacromosoma se separan, cada una va a un polo
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Empieza a formarsela envoltura nuclear
Las cromátidasse descondensan
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Resultado final: dos célulashijas idénticas a la madre
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En células vegetales la separación de las dos células hijas se produce porla formación de un tabique:El fragmoplasto
Pared celular
Membranaplasmática
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MITOSIS
CellDivisionH[1].mov
CICLO CELULAR-MITOSIS.swf
Mitosis and Cytokinesis, MCGRAW.swf
1 A 2.mov
2 A 4.mov
Mitosis- COL.swf
Mitose-FR.swf
mitosis_min1.mov
MITOSIS. EDU.AR.swf
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3 4
5 6
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El ciclo celular
G1
G2
S
Interfase Mitosis
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MitosisINICIO DE LA PROFASE
FINAL DE LA PROFASE
METAFASE
INICIO DE LA ANAFASE INICIO DE LA
TELOFASE
TELOFASE
Cromosomas
Huso mitótico
Centrosoma
Envoltura nuclear
Fibras del áster
Microtúbulos cinetocóricos
Cinetocoro
Placa metafásica
Microtúbulos polares
Cromátidas
Cromosomas en descondensación
Envoltura nuclear en formación
Envoltura nuclear
Microtúbulos polares
Anillo contrátil
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Microfotografías de mitosis