. "Parallelism that involves morphologically very similar structures, occurring only within some members of a taxon and absent in the common ancestor (which possessed the developmental basis to develop this character)." . . "apomorphic tendency" . . "homoiology" . "cryptic homology" . "latent homologous to" . . "homoplastic tendency" . . . "Used for structures in closely related taxa." . "in latent homology relationship with" . "re-awakening" . . . "underlying synapomorphy" . .