What studies support evidence for design?
Species all have an ID marker-traits, features, etc that tell us where they are located on the planet. It is their environment's mechanism that changes occur in species that live in those specific locations. It is the same in humans in obvious traits that easily identify where they are from, for example: Chinese people has distinct features that tell us they are from China. Specific designed traits is a location marker of its origin. Directed or undirected it is still a fact in observation.