Et si la vie sur Terre avait commencé par de l'ARN, avant l'apparition de l'ADN et des protéines ? C'est l'hypothèse dite du Monde à ARN.
Détails et compléments dans le billet de blog qui accompagne la vidéo : https://scienceetonnante.com/blog/2025/05/16/lhypothese-du-monde-a-arn/
Merci à Philippe Nghe de l'ESPCI pour avoir répondu à mes questions !
Le serveur Discord de Science étonnante ➡️ https://discord.gg/GPamYjVYxA
00:00 Introduction
00:59 Les caractéristiques de la vie
04:01 LUCA, notre ancêtre commun
06:12 L'ARN
09:08 Les biopolymères programmables
13:28 L'ARN catalyseur : les ribozymes
17:09 L'expérience de Miller-Urey
19:27 Des nucléotides qui se forment spontanément ?
22:20 L'autoréplication de l'ARN en question
Écrit et réalisé par David Louapre © Science étonnante
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