Researchers identify a member of the Sox gene family – which probably arose from whole genome duplication – that controls segmentation during spider development and likely represents a common ancestral mechanism for segment formation in arthropods.
Scientists suggest genetically modified bacteria that respond to light could be used as 'microbricks' for building the next generation of microscopic devices.
New insight on the origins and global spread of two classes of the hepatitis B virus likely reflect the impact of prehistoric and more recent human migrations and other activities on their evolution.