You searched for: “allomorphosis”
allomorphosis (s) (noun), allomorphoses (pl)
Allometric variation in a series of genetically different but related organisms: Allomorphosis can be seen in the difference of jaw length to skull length of the adult in a series of breeds of dogs.

Allomorphosis relates to evolution with a rapid increase of specialization characterized by the rapid development or growth of one anatomical feature or organ in relation to the entire organism..