caenogenesis

/ˌsiːnəʊˈdʒɛnɪsɪs/
noun
1.
the development of structures and organs in an embryo or larva that are adaptations to its way of life and are not retained in the adult form Compare recapitulation (sense 2)
Derived Forms
caenogenetic (ˌsiːnəʊdʒɪˈnɛtɪk), cainogenetic, kainogenetic (US) cenogenetic, kenogenetic, adjective
caenogenetically, cainogenetically, kainogenetically (US) cenogenetically, kenogenetically, adverb