Could yeast and humans be any more different? Going by looks alone, probably not. But peering into our genomes reveals surprising similarities. That’s because we share a common ancestor called LECA (last eukaryotic common ancestor). Before this single-celled organism died off around 2 billion years ago, it passed down Dicer, a key protein humans and certain yeasts still rely on today.
Ancient protein Dicer and RNase H are both needed to resolve transcription–replication collisions, study reveals
