Umfana kanye nentombazane yeGemini

Amawele asebukhosini asho ukuthini - imfihlakalo yemvelo, noma isipho sokuphela kwabazali abakhethiwe? Kungaba yini ukuvivinya okungathí sina? Yiqiniso, ezimbili ezifanayo zangaphandle, kodwa ngesikhathi esifanayo ubulili obuyingqayizivele - indodakazi nendodana encane - lokhu kuyinjabulo yangempela. Kodwa ngesikhathi esifanayo - umthwalo omkhulu, futhi uma ungeza ingozi yeziphambeko ezihlukahlukene zofuzo, kungase kube kuhle ukuthi abambini abanjalo bahlangabezane nenye inkulungwane.

Ngokwezibalo, izingane ezimbili eziyisigqila zingumfana nentombazane-into engavamile kakhulu ukuthi ngemva kokufunda ngokukhulelwa okuphindaphindiwe, omama abaningi nabazali, ngisho nabodokotela, futhi ungacabangi ukuthi amawele obukhosi angazalwa . Emva kwakho konke, abantwana abangenayo i-unisex, ngokuvamile bawumphumela wokukhulelwa kwamaqanda amabili, lawo mawele, kodwa hhayi amawele. Noma kunjalo, izindaba ziyaziwa ngamacala uma ngesikhathi esifanayo ukukhanya kubonakala umfowethu nodadewethu, kufana nomunye nomunye njengamaconsi amabili amanzi.

Ngabe amawele, noma onke amawele afanayo, umfana ozelwe kanye nentombazane enesisindo esifanayo esifana nesethi? Ake sizame ukuyihlola.

Ingabe umfana kanye nentombazane efanayo bangaba amawele?

Akunakwenzeka ukuphika lelo qiniso, futhi ukukhanya okuncane kuye kwachithwa yisayensi yokuzalwa okungaqondakali kwamawele obulili obuhlukile. Yebo, kungaba, nakuba kungavamile kakhulu.

Sonke siyazi kusukela ezifundweni ze-anatomy ukuthi amawele avela ku-zygote eyodwa futhi abe nesethi efanayo ye-chromosome. Kodwa kunezici eziningana nezinqubo ezingaqondakali lapho amawele avela khona: umfana nentombazane. Ake sicabangele uma kungenzeka:

1. Uma elinye lamawele abafana "elahlekile" i-Y chromosome. Lesi simo kunalokho sibhekisela kwinani lezinkinga futhi kubizwa ngokuthi i-Turner syndrome.
2. Uma ingane eyodwa ine-X-chromosome eyodwa eyengeziwe (i-Clinfelter's syndrome).
3. Uma kwenzeka iqanda linesikhathi sokuhlanganyela ngaphambi kokukhulelwa. Ezimweni ezinjalo, ukukhulelwa kwenzeka nge-spermatozoa ehlukene, futhi kungenzeka ukuthi amawele azoba ngamacansini ahlukene.
4. Uma iqanda (iqanda ngokwalo kanye nomzimba wayo we-polar) lihlanganiswe namaseli amabili wesilisa. Ezimweni ezinjalo, izinsana zizalwa ziphilile, ngaphandle kwezinkinga zegenes.

Indlela yokukhulelwa amawele omfana nentombazane?

Inqubo yokwakheka kwamawele e-heterozygous i-monozygotic inzima kakhulu futhi ayifundanga ngokugcwele. Ngakho-ke, njengokungathi abazali abafuni ukuzala amawele omfana nentombazane, cishe akunakwenzeka ukubikezela noma ukuthonya le nqubo kusengaphambili. Nakuba isayensi ingasimi, futhi kanye nokwethulwa okukhulu kwe-IVF, omama nabomama esikhathini esizayo babe nethemba esikhathini esizayo sokuhlelela ngaphambili ubulili bezingane nobunikazi babo.