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news Biology Evidence status: Peer reviewed · Laboratory cultures and genome analysis

Lab-grown Asgard archaea closest to eukaryotes are simple inside

Two newly cultured Heimdallarchaeia, the closest known archaeal relatives of eukaryotes, lack internal membranes. What that means for how complex cells began.

What it does not show Two modern strains stand in for an ancient ancestor, and eukaryotes' exact place in the Asgard tree is disputed.

By Murad Ali Khan 9 min read
Primary sourcesResearch and official data linked in context
Evidence calibratedObservation, interpretation and speculation separated
Corrections welcomeTransparent updates and a direct reporting channel

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