Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 1 May 1998:
Vol. 280. no. 5364, p. 673
DOI: 10.1126/science.280.5364.673
Prev | Table of Contents | Next

Research News

EVOLUTION:
Direct Descendants From an RNA World

Elizabeth Pennisi

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.

Read the Full Text

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)