Members of this group have only one copy of the Hox genes and are found in all animal subpylums except the Craniata subpylum of Chordata.
Carolus Linnaeus' original taxonomy of living organisms divided this group of animals into two categories: worms and insects. However, as this group encompasses 95% of the kingdom Animalia, more divisions including Rotifera, Nemertea, Cnidaria, and Arthropoda having since been created. Members of this group have only one copy of the Hox genes and are found in all animal subpylums except the Craniata subpylum of Chordata. FTP, name this category of animals that have no backbone.
Carolus Linnaeus' original taxonomy of living organisms divided this group of animals into two categories: worms and insects.
invertebrates