What happens to sex pheromones as new species emerge? New research studies sex pheromones in the fission yeast Schizosaccharomyces pombe, revealing an 'asymmetric' pheromone recognition system in which one pheromone operates extremely stringently whereas the other pheromone is free to undergo a certain degree of diversification, perhaps leading to a first step towards speciation.
So-called bifacial stem cells are responsible for one of the most critical growth processes on Earth -- the formation of wood. By alternately developing into wood and bast cells, these stem cells are thus starting points for forming wood as well as generating plant bast fibers. A team of researchers were recently able to demonstrate […]
Prions can infect both humans and animals, causing Creutzfeldt-Jakob disease (CJD) in humans, mad cow disease in cattle, and chronic wasting disease in elk and deer. The infectious, misfolded protein particles often go undetected as they destroy brain tissue, causing memory loss, mobility issues, and ultimately death. Preclinical detection of prions has proven difficult, but […]