COOPERATIVE CELLS:Courtesy of Michael CarrollThe evolution of complex biologic organisms began with the symbiotic relationship between pro- and eukaryotes (I). This relationship gave rise to mitochondria (II), and the resulting diversity of unicellular organisms (III) led to their metabolic cooperativity (IV) mediated by ligand-receptor interactions and cell-cell signaling. Natural selection generated an increasing complexity (V). Failed homeostatic signaling (VI) recapitulates hylogeny/ontogeny
Many species of birds and other vertebrates form pair bonds and mate with just one other individual for much of their lives. But the unions don’t always work out. Scientists want to know the underlying factors.
As more researchers flock to the popular field, observers fear a widening gap between supply and demand When scientists convene in New Orleans next week for the 33rd annual meeting of the American Society for Cell Biology (ASCB), nine symposia, 20 minisymposia, and countless informal gatherings are sure to focus on the recent achievements and continuing progress in this exciting and rapidly expanding scientific field. There is likely to be little excitement in the air, however, concerning the
The Scientist and Jerome Siegel | Mar 1, 2016 | 10+ min read
Once believed to be unique to birds and mammals, sleep is found across the metazoan kingdom. Some animals, it seems, can’t live without it, though no one knows exactly why.