Research NewsEvolution

Direct Descendants From an RNA World

See allHide authors and affiliations

Science  01 May 1998:
Vol. 280, Issue 5364, pp. 673
DOI: 10.1126/science.280.5364.673

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Summary

The newly sequenced microbial genomes are challenging the consensus that eukaryotes, organisms ranging from yeast to human that have nucleated cells, evolved from archaea--one kingdom of nonnucleated prokaryotes--rather than from bacteria, the other prokaryote kingdom. Now a team of microbial evolutionary biologists suggests in the January Journal of Molecular Evolution that eukaryote-like cells actually predated the prokaryotes.