Yksisilmäinen esi-isä ihmissilmien takana

Suomi

600 miljoonaa vuotta sitten élnéy yksisilmäinen olento kuuluu ihmiskunnan vanhimpien esi-isien joukkoon ja se antoi alkunsa nykyisille silmillemme, kertoo Lundin yliopiston tutkimus. Tutkijat analysoivat valoherkkiä soluja eri eläinryhmissä selittääkseen, miksi selkärankaisten silmät eroavat muista. Tutkimus julkaistiin Current Biology -lehdessä.

Lundin yliopiston tutkimus paljastaa, että 600 miljoonaa vuotta sitten élnéy yksisilmäinen, madonmuotoinen eliö on kaikkien selkärankaisten, mukaan lukien ihmisten, yhteinen esi-isä. Tämä kyklopimainen olento eli paikallaan istuvana kaivautuvana suodattajana, joka siivilöi planktia merivedestä, joten sillä ei ollut tarvetta parisilmille liikkumiseen ja suuntautumiseen.

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