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Ch2_-_Partie_1.pdf
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Monsieur Bernhard
October 04, 2023
Education
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Ch2_-_Partie_1.pdf
Monsieur Bernhard
October 04, 2023
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Transcript
Chapitre 2 : L’ADN, support de l’information génétique
Rappels de collège : chromosome gène allèles
Quelle est la structure de l’ADN ? Comment peut-elle porter
des informations ?
None
L’ADN est constitué de 2 chaines reliées par des liaisons
hydrogènes L’ADN forme une double hélice
Un brin d’ADN est constitué d’une succession (enchainement) de nucléotides
reliés les uns aux autres. 4 A, T, C, G
4 A G complémentaires
phosphate désoxyribose adénine thymine guanine cytosine bases azotées Liaisons Hydrogènes
Page 32 Chapitre 2 : L’ADN, support de l’information génétique
1) L’ADN, une macromolécule informative → voir TP n°3
Double hélice Brin 1 Brin 2 Nucléotide
None