Larger ecosystems may have several organisms doing the same thing, though not necessarily at the same time or in the same place. (kavlifoundation.org)
«We wanted to determine the possible role of a protein named Rif1 since it was recently implicated in controlling DNA replication in several organisms, including yeast and human cells,» reports Stefano Mattarocci, lead author of the study. (sciencedaily.com)
And, if that species serves as food for several organisms, it climbs up the rankings. (scientificamerican.com)