Download - Unidad 8 ciclo celular
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Blgo. Jimmy Ibarra Trujillo [email protected] BIOLOGIA 2010 UNFV - CEPREVI
Unidad VIII: CICLO CÉLULAR
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CICLO CÉLULAR
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MITOSIS
• Somática• Ecuacional• Homotípica
La mitosis es un proceso continuo e indiviso, para su estudio presenta:
• Cariocinesis: Profase, Metafase, Anafase y Telofase.
• Citocinesis.
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Citocinesis vegetal
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MITOSIS
INTERFASE PROFASE METAFASE ANAFASE TELOFASE CÉLULAS HIJAS
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MITOSIS = cariocinesis
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MEIOSIS
• Gonídica• Reduccional• Heterotípica• La meiosis es un proceso continuo e indiviso ,
para su estudio comprende a las etapas: meiosis I, Intercinesis y Meiosis II.
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Gametogénesis
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MEIOSIS
Meiosis I
Reduccional
2 células hijas n
Meisosis II
Ecuacional
4 Celulas hijas 2n
Profase
Metafase
Anafase
Telofase
Profase
Metafase
Anafase
Telofase
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MEIOSIS I
• Profase I Leptonema: Bouquet
Cigonema : Sinapsis
Paquinema: Tetradas, Crossing over
Diplonema: Quiasmas
Diacinesis : Disminución de quiasmas
• Metafase I• Anafases I• Telofase I
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PROFASE I
• Leptonema
• Cigonema
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PROFASE I
• Paquinema
• Diplonema
• Diacinesis
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ANAFASE I
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TELOFASE I
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ANAFASE II
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TELOFASE II
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MEIOSIS
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GRACIAS