Kodi amayi ena ali ndi chibadwa chofuna kukhala ndi anyamata ambiri kapena atsikana?

Kugonana kwa mwana wosabadwayo kumakhudzidwa ndi majini, ndipo kafukufuku wapeza kuti zolakwika za chromosomal zimatha kukhudza kugonana kwa mwana wakhanda.

Zotsatira zake zimawonekera kwambiri mwa amuna.

Mu nyama zoyamwitsa, ma sperms omwe ali ndi X chromosome amapanga atsikana pomwe ma sperms omwe ali ndi Y amatulutsa anyamata. Choncho makolo omwe ali ndi vuto la majini mu X kapena Y amakonda kutulutsa amuna kapena akazi okhaokha.
Kafukufuku amasonyeza kuti abambo achizungu amabala ana aamuna pafupifupi 105 pa atsikana 100 aliwonse, abambo a ku Africa amabala pafupifupi 103, pamene abambo akuluakulu amabala ana aakazi ambiri.

Zotsatira zina ziliponso, mwachitsanzo, abambo omwe ali ndi matenda a chiwindi C amakhala ndi anyamata ambiri.
Tanthauzo lake, pafupifupi amayi onse amayenera kukhala ndi anyamata ambiri - chiwerengero cha kugonana kwa anyamata a 105 kwa atsikana a 100 chimakhudzidwa ndi chisankho cha bwenzi, chomwe chidzakhala ndi gawo la majini.

Kotero tikhoza kuyembekezera zotsatira za majini mwa amayi, ngakhale zofooka.