LifeFish covered in tooth-like armour could help reveal how teeth evolved A pet fish adorned with tooth-like scales is helping biologists tackle a longstanding debate about the origin of teeth 51¶¯Âþ
LifeThe first complex cell may have had dozens of nuclei instead of one The original complex cells may have been less like amoebas and more like the cells of fungi that contain many nuclei, each with a copy of the genome 51¶¯Âþ