#dimorphism  (biology) the existence of two forms of individual within the same animal species (independent of sex differences)
  supertype:  #polymorphism  (biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences)
     supertype:  #organic_phenomenon__organicphenomenon  a natural phenomenon involving living plants and animals
        supertype:  #natural_phenomenon__naturalphenomenon  all non-artificial phenomena
           supertype:  #phenomenon  any state or process known through the senses rather than by intuition or reasoning
              supertype:  sumo#process__proces__physicalsituation  intuitively, the class of things that happen and have temporal parts or stages; examples include extended events like a football match or a race, actions like pursuing and reading, and biological processes; sumo#process is not identical to pm#situation because an instance of pm#situation is not necessarily an instance of sumo#physical
                 supertype:  pm#situation  something that "occurs" in a real/imaginary region of time and space
                    supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                 supertype:  pm#process_or_process_description
                    supertype:  pm#processing_thing
                       supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                          supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                 supertype:  sumo#physical__physical_thing  an entity that has a location in space-time; locations are themselves understood to have a location in space-time; click here for more details on the identical category sowa#physical_thing
                    supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

No statement uses or specializes #dimorphism; click here to add one.