Example: [ E=wing Q=absent ] -applies to an organism that lacks wings. Note that this is the reciprocal quality to the relational quality "lacks all parts of type". This means that [E=wing Q=absent] is replaceable with [E=organism Q=lacks_all_parts_of_type E2=Wing]. The latter is preferable as it allows greater precision in stating what is lacking from where. E.g. We can say [E=spermatocyte Q=lacks_all_parts_of_type E2=aster] to describe spermatocytes that have no asters.

absence

absent from organism

A quality denoting the lack of an entity.

http://purl.org/obo/owl/PATO#PATO_0000462