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Episode: Tiere ohne Kopf

Seit 600 Millionen Jahren, also lange vor den Dinosauriern, gibt es die Medusen, Korallen und andere Nesseltiere. Offenbar ist der Bauplan dieser Tiere unverändert und bis heute brauchbar und robust. Ihre Selbstorganisation, die Geschwindigkeit ihrer Attacken, ihr Gift, aber auch ihre Schönheit und ihr potenziell ewiges Leben sind ohne Beispiel. Diese Tiere haben keinen Kopf. Sie sind als pure Fressmaschinen gebaut und dennoch komplex: in 12 von 13 Untergruppen sind ihre Gene denen der Säugetiere, also auch unseren, gleich. Prof. Dr. Thomas W. Holstein erforscht die molekulare Evolution und Genomik dieser Tiere. Er berichtet.