Mikael Niku (@mikaelniku.bsky.social)

Kalojen uimarakko on huisi esimerkki evoluution kiemuraisista poluista, joilla innovaatiot johtavat toisiin. Me kaikki maalla elävät selkärankaisethan ollaan luukalojen jälkeläisiä. Mutta nykypäivän kalojen uimarakko luultavasti kehittyi… keuhkoista! science.ku.dk/english/pres...

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We’re more like primitive fishes than once believed People traditionally think that lungs and limbs are key innovations that came with the vertebrate transition from water to land. But in fact, the genetic basis of air-breathing and limb movement was already established in our fish ancestor 50 million years earlier. This, according to a recent genome mapping of primitive fish conducted by the University of Copenhagen, among others. The new study changes our understanding of a key milestone in our own evolutionary history. https://science.ku.dk/english/press/news/2021/were-more-like-primitive-fishes-than-once-believed