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Proposition(s) correcte(s)BEProposition(s) fausse(s)A : FAUX, Les chiasmas sont bien sur les sites de CROSSINGOVER ayant eu lieu tors du stade PACHYTÈNE.C : FAUX, on a une forte synthèse d'ARN a ce stade et non pas d'ADN.D : FAUX, On a une forte synthèse d'ARN durant cette phase possible grâce à une décondensation localisée des chromosomes. En effet, à ce stade, les chromosomes sont recondensés après l'achèvement de la transcription des gènes.
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