Into engavamile kakhulu, i-superfetation, noma i-superfoetation, iqiniso lokuthi owesifazane ukhulelwa lapho esevele ekhulelwe, izinsuku ezimbalwa kuphela ngokuhlukana. Cishe ayishumi kuphela amacala aqinisekisiwe emhlabeni. Ukukhulelwa ngokweqile, ngakolunye uhlangothi, kuvame kakhulu ezilwaneni, ikakhulukazi amagundane afana nonogwaja.

Ngokuvamile, owesifazane uyeka ukuqanda lapho ekhulelwe. I-Superficiality yiqiniso lokuba nama-ovulation amabili, abambezeleke ngezinsuku ezimbalwa. Ngakho-ke singabheka ukuvundiswa okubili kwama-oocyte, okungaba umphumela wobudlelwane obubili: nomlingani oyedwa noma amadoda amabili ahlukene. 

Ama-fetus amabili azofakwa esibelethweni futhi aguquke kamuva. Ngakho-ke bayoba nesisindo nobukhulu obuhlukene. Lesi simo sihluke kakhulu njengoba ukuguqulwa kwe-endometrium, okubizwa nangokuthi ulwelwesi lwesibeletho, ngokuvamile akuhambisani nokufakwa kwelinye iqanda esibelethweni. Ngempela, ezinsukwini ezilandela ukuvundiswa, izoshuba ngokubonakala kwemithambo yegazi namangqamuzana ukuze inikeze indawo ekahle yokufakelwa.

Icala le-in vitro fertilization (IVF)

E-France, ngesikhathi se-IVF, odokotela bafaka ubuningi bemibungu emibili ubudala bayo obungahluka ukusuka ku-D2 ukuya ku-D4 njengesibonelo. Isikhathi sabo sizohlehliswa ngezinsuku ezimbalwa. Singabe sesikhuluma ngokukhulelwa okungadingekile.

Ezimweni eziningi, ukuhlolwa okuphelele kwezokwelapha kuzochaza lesi simo esiyingqayizivele. Ocwaningweni olushicilelwe ngo-2008 ngabakwa Ijenali Yezifo Zokubelethisa kanye Nebhayoloji Yokuzala *, ososayensi banikeza iziphakamiso eziningana: 

• Uhlelo lwezakhi zofuzo "ngokwemfanelo kanye / noma ngobuningi lukhuthaza ukukhiqizwa kwe-hCG ye-placenta, lungabangela enye i-ovulation futhi luvumele ukufakelwa"; 
• I-ovulation kabili: ngezinye izikhathi kwenzeka kwabesifazane emithini yokukhuthaza ukuzala; 
• Ukonakala kwesibeletho: njengesibeletho se-didelphic, esibizwa nangokuthi i-double uterus, isibonelo.

Endabeni yokubheka phezulu, ngeke sikhulume ngamawele akhulelwa ngesikhathi socansi olulodwa. Amawele e-Monozygotic akhiqizwa eqandeni elifanayo lihlukaniswe kabili phakathi nezinsuku zokuqala eziyi-15 emva kokuvundiswa. Endabeni yamawele e-dizygotic, noma "amawele omndeni", sibona ukuba khona kwama-oocyte amabili ahlanganiswe ama-spermatozoa amabili ngesikhathi sombiko ofanayo.

Ukutholakala kwecala nokungabaza kwabanye ochwepheshe bezempilo ngokubhekana nalesi simo, kwenza ukukhulelwa kube nzima ukukubona. Abanye bazodideka nokukhulelwa kwamawele e-dizygotic.  

Ikakhulukazi ukuvinjelwa kokukhula kwe-intrauterine komunye wengane okwenza kube nokwenzeka ukusola ukuvelela. Kuyobaluleka ukunquma ukuthi ingabe umehluko wobude ubangelwa umehluko weminyaka yokukhulelwa noma uma kuwukuphazamiseka kokukhula okungase kube uphawu lokungajwayelekile noma inkinga yezempilo esikhathini esizayo. ingane.

Njengasendabeni yokuzalwa kwamawele, ukubeletha kombungu wokuqala kuzobangela lokho okwesibili. Izingane zibelethwa ngesikhathi esifanayo, nakuba enye yezingane izoba kancane kancane.