Eukaryogenesis was not a "step"!
Neat new paper here, which reminds me to plug again Dan Mills' paper with me and Jenn Macalady on the topic of the "Hard Steps" paradigm:
www.science.org/doi/10.1126/...
www.science.org
Humans—and analogous life beyond Earth—may represent the probable outcome of biological and planetary coevolution.
How did complex cells emerge? In this groundbreaking paper, @tonigabaldon.bsky.social & co show that eukaryotes arose through multiple waves of ancient genetic exchange involving diverse bacteria (& giant viruses!) revealing a far more complex origin than we imagined. www.nature.com/articles/s41...