Njengobungqina "bobuzalwana" bomtsalane wamafanasini, amatsha ntliziyo e-LGBT* ahlala ebhekisa kufunda Isazi ngemithambo-luvo uSimon LeVay ukusukela ngo-1991, nalapho athe wafumanisa ukuba ihypothalamus yamadoda “athandana nobufanasini” alinganayo nawabafazi, ekuthiwa abenza ubufanasini. Yintoni efunyenwe nguLeVey? Into awayifumananga ngokungathandabuzekiyo yayikukunxibelelana phakathi kolwakhiwo lobuchopho kunye notyekelo lwesini. 

Uninzi lwezixhobo ezingezantsi zipapashwa kwingxelo yohlalutyo. "Iintsomi ezenziwa ngabantu abathandana abathandanayo kwaye zibhengeza ukukhanya kwesayensi". ikhonkco:10.12731/978-5-907208-04-9, ISBN 978-5-907208-04-9

Esinye isilogeni sentshukumo ye-"LGBT*" kuluvo lokuba inani labantu abanomdla wobufanasini kucingelwa ukuba li-10% - oko kukuthi, rhoqo kwishumi. Ngokwenyani, ngokutsho kwezifundo ezinkulu zale mihla eziqhutywe eUnited States kunye ne-European Union (oko kukuthi, kumazwe apho ubufanasini buxhaswa ngokupheleleyo kwaye bukhuselwe yizixhobo zombuso), inani labantu abachonga ubufanasini liyahluka ukusuka kwi-<1% ukuya kuthi ga kwi-3%.