Download - Citogenética – Divisão Celular – Meiose
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MEIOSE
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MEIOSEUma célula-mãe origina 4 células filhas.
Divisão reducional R!
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Realizado durante a formação de gametas.
MEIOSE
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Prófase I Leptóteno ZigótenoDividida em Paquíteno Diplóteno Diacinese
MEIOSE I
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Prófase I
Início da condensação cromossômica.
Emparelhamento do cromossomos homólogos.
MEIOSE I
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Prófase ICromátides Bivalentes.
MEIOSE I
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Prófase ICrossing-over.
MEIOSE I
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Prófase IMEIOSE I
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Metáfase I
Formam-se as fibras cromossômicas
Cromossomos no equador da célula.
MEIOSE I
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Metáfase IMEIOSE I
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Anáfase ISeparação dos cromossomos homólogos.
MEIOSE I
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Telófase IReorganização do núcleo
MEIOSE I
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Meiose II
Semelhante à mitose.
Divisão equacional
MEIOSE II
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MEIOSE
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MEIOSE• Problemas na Anáfase I ou II leva a formação de
gametas defeituosos.
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MEIOSE
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MEIOSE