1. Quel est le principal composant de la chromatine qui constitue les chromosomes ?
2. Combien de chromosomes humains sont présents en phase haploïde dans une cellule germinale ?
3. Quelle étape du cycle cellulaire est responsable de la duplication de l'ADN ?
Chromosomes — composition ?
ADN et protéines histones
Chromosome — définition?
Structure condensée d'ADN supportant l'information génétique.
Cycle cellulaire — phases ?
Interphase (G1, S, G2) + mitose
Chromatine — état en interphase?
ADN décondensé, accessible à la transcription.
Réplication — mécanisme ?
Semi-conservatrice, ADN double brin
Nucléotide — composant?
Unité de base de l'ADN (A, T, C, G).
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