Ingabe abanye besifazane bathambekele kofuzo lokuba nabafana abaningi noma amantombazane amaningi?

Ubulili bombungu buthonywa izakhi zofuzo, futhi ucwaningo luthole ukuthi ukukhubazeka kwe-chromosomal kungenzeka kuthinte ubulili bosana olusanda kuzalwa.

Umphumela ubonakala kakhulu emadodeni.

Ezilwaneni ezincelisayo, izidoda eziphethe i-X chromosome zikhiqiza amantombazane kuyilapho izidoda ezithwele u-Y zikhiqiza abafana. Ngakho abazali abanokukhubazeka kofuzo ku-X noma ku-Y bavame ukukhiqiza abobulili obuhlukile.
Ucwaningo lwembula ukuthi obaba abamhlophe bazala amadodana angaba ngu-105 emantombazaneni angu-100, obaba base-Afrika bazala angaba ngu-103, kanti obaba abadala bazala amadodakazi engeziwe.

Eminye imiphumela nayo ikhona, ngokwesibonelo, obaba abanesifo sokusha kwesibindi kohlobo C banabafana abaningi.
Okusho ukuthi, cishe bonke abesifazane bavame ukuba nabafana abaningi - isilinganiso sobulili sabafana abangu-105 kuya kumantombazane angu-100 sithinteka ekukhethweni komlingani, okuzoba nesici sofuzo.

Ngakho-ke singalindela imiphumela yofuzo nakwabesifazane, nakuba ibuthakathaka.