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felixlef
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  • Reads 3
  • Votes 0
  • Parts 1
  • Time <5 mins
felixlef
Ongoing, First published Oct 21, 2024
Mature
L'ADN est associé à des protéines :
- Pour former la chromatine dans les cellules eucaryotes.
- Pour assurer sa compaction :
• Tout en le maintenant fonctionnel car l'ADN doit être accessible aux enzymes :
• De la réplication: duplication du matériel génétique
• De la transcription
• De la réparation.
• Permettant de faire tenir tout l'ADN dans le noyau :
• L'équivalent de 40 km d'un fil très fin dans une balle de tennis
• Exemple pour un lymphocyte circulant d'une taille d'environ 10 um : le volume du noyau est de 5 um', or le volume de l'ADN est de 1.9 um', soit moins de la moitié du volume du noyau.
B.
Le génome mitochondrial
Plusieurs copies de chromosomes circulaires.
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Wendizzy's Writer Room cover

Wendizzy's Writer Room

2 parts Ongoing

In this book, you'll get a behind the scenes look at how your favorite characters were born, my creative process, and the dirty details never before revealed. Tex's Camp Q&A: Come sit by the fire and ask me whatever you'd like. We can roast marshmallows, tell scary stories, and hang out in the comments like a big, happy family. Gator's Backstage Pass: A place full of secrets. Learn the-sometimes embarrassing-details on how my wildest scenes came to life, facts about the characters, the process, and myself.

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