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Biology of the Cell

noyau et cycle cellulaire

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Biology
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Léon Guignard
Biology of the Cell

Biologie Chapitre 6?: le noyau et le cycle cellulaire L?origine ?volutive du noyau de la cellule?: L?invagination de la membrane plasmique de la mol?cule d?ADN fixe a conduit ? la cr?ation d?une enveloppe autour de l?ADN. L?enveloppe contient de nombreux canaux de communication (pores nucl?aires) La lumi?re du RE est en communication directe avec l?espace entre le noyau interne et la membrane externe. Deux organelles dans la cellule animale contiennent de l?ADN?: la matrice mitochondriale contient plusieurs copies (5-10) identiques de l?ADN mitochondrial annulaire (ADNmt). le noyau contient 46 chromosomes?: mol?cules d?ADN lin?aires longues. L?ADN du noyau est r?parti sur un certain nombre de diff?rents chromosomes
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