The selfish gene is an entity driven by an unadmitted teleological force to replicate itself in offspring. But horizontal gene transfer—hardly taken seriously the day before yesterday—features genes that simply end up on a different string. Is a relentless force of selfishness driving them to do tha
Scientists debate whether ctenophores are the earliest animals to appear in the Cambrian explosion. If so, they arrived with multiple tissues, a nervous system, and a digestive system.
Some of the same mutations allowing humans to fend off deadly infections also make us more prone to certain inflammatory and autoimmune diseases, such as Crohn’s disease. Researchers describe how ancestral origins impact the likelihood that people of African or Eurasian descent might develop immune-related diseases. The authors also share evidence that the human immune system is still evolving.
Over the course of several months, researchers created Escherichia coli strains that consume carbon dioxide for energy instead of organic compounds. This achievement in synthetic biology highlights the incredible plasticity of bacterial metabolism and could provide the framework for future carbon-neutral bioproduction.