Inversion
hypothesis that during the course of animal evolution, the structures along the dorsoventral (DV) axis have taken on an orientation opposite that of the ancestral form
en-GB/ɪnˈvɜːʃn/
en-US/ɪnˈvɝʒən/
hypothesis that during the course of animal evolution, the structures along the dorsoventral (DV) axis have taken on an orientation opposite that of the ancestral form