Njengokuqinisekisa "ubuzwe" bokukhangwa ubungqingili, izishoshovu ze-LGBT zivame ukubhekisela kukho ukutadisha isazi sezinzwa uSimon LeVay wango-1991, lapho kuthiwa wathola khona ukuthi i-hypothalamus yabesilisa “abanobungqingili” ilingana neyabesifazane, okuthiwa ibenza ongqingili. Yini ngempela ayithola uLeVay? Angakutholanga ngokuqinisekile kwakuwukuxhumana phakathi kwesakhiwo sobuchopho kanye nemikhuba yocansi.