Into efana nokuzalwa kwezintombi iyinhlupho kulezi zinsuku. Yingakho iningi labameli besifazane abakholelwa kuleso simo. Nokho, kuze kube yimanje, amacala angu-16 e-Immaculate Conception aqoshiwe emhlabeni jikelele. Ake sihlolisise lesi senzakalo bese sizama ukuthola ukuthi lokhu kwenzeka kanjani, ngaphansi kweziphi izimo kungenzeka, nokuthi igama elithi "ukuzalwa kwentombi" lisho ukuthini.
Yini eqinisekisa ukuthi kungenzeka ukuthi abantu bangabonakali kahle?
Njengoba kuyaziwa, ngokwemfundiso eyodwa, izinkawu ziyizinkokheli zomuntu, isb. ngakho-ke abantu bangabomfuyo. Futhi ezweni lezilwane, into efana ne-parthenogenesis (igama lesayensi le-Immaculate Conception) akuvamile. Ngale ndlela, izinhlobo ezihlukahlukene zezilwanyana ngisho nezinyoni, inqwaba yezinto eziphilayo ezingenayo i-invertebrate zingakwazi ukukhiqiza ngaphandle kobunzima. Konke lokhu kuyi-theory kuqinisekisa ukuthi kungenzeka ukubonakala kwe-Immaculate Conception ngosuku lwethu.
Ukuqinisekiswa kwesimo esinjalo njengokuzalwa kwezintombi kungaba yizimo zangempela zokuphila. Njengomunye wabo ungacabangela ukukhulelwa komuntu ongumNgisi uSarah Fry. Ngokusho kowesifazane ngokwakhe ngosuku lwakhe lokuzalwa lweshumi nesishiyagalolunye, wayesengumntwana omsulwa. Konke ekuphileni kwakhe kwashintsha ngokumane kwaze kwafika iphuzu elithile. Ngemva kokuya emsebenzini eSoutheast-Asia, uSara ngokuzumayo wabhekana nenkinga enjengokungasebenzi kahle komjikelezo wokuya esikhathini . Kodwa ngakho wacabanga, aze ahambele umjozi wezifo zomzimba, ngubani emva kokuhlolwa okwaphetha ngokuthi lo wesifazane ukhulelwe. Ososayensi abaningi baba nesithakazelo kulokhu okwenzekayo, okwathi emva kokucwaninga okude kwaphetha ukuthi iphutha lokukhulelwa okungenakuqhathaniswa kwakuwukudla owesifazane osetshenziselwa ngenkathi ehambeni olude.
Ukuzalwa kwentombi kwenzeka kanjani?
Ngalesi simo, ama-chromosome angama-23 aqukethwe eqanda elivuthiwe aqala ukuhlukanisa ngokuzimela, okwenza kube nokubunjwa kwe-46. Ngemva kwalokhu, iqanda liqala ukuqubuka, ekugcineni libe umbungu. Kufanele kuqaphele ukuthi ezimweni ezinjalo, ukuzalwa kwengane kunokwenzeka kuphela kwabesifazane; i-Y-chromosome edingekayo emzimbeni wesifazane ayikho.
Iyini isizathu esiyinhloko sokukhulelwa kwentombazane ososayensi?
Ekucwaningweni kwabesifazane ababeletha ngaphandle kokubamba iqhaza kwamadoda, kwafunyanwa ukuthi icala lalesi simangaliso liyi-bacterium, okwakubonakala kutholakala emzimbeni wezinambuzane. Ngesinye isikhathi emzimbeni womuntu, umsebenzi wakhe obalulekile uholela eqinisweni lokuthi iqanda eliye lakhula ngenxa yomjikelezo wokuya esikhathini ngokuzumayo liqala ukuhlanganyela ngokwaso.
Futhi phakathi kwabesosayensi, kwavela umbono wokuthi umgqugquzeli walesi sitshalo ukwanda kwezinga lokushisa kwemvelo (isibonelo, ukuvakashela i-sauna noma i-sauna). Noma kunjalo, leli qiniso aliqinisekisiwe, kodwa kuphela ukucabanga kwezesayensi.
Ekhuluma ngokuthi kungenzeka yini ukukhulelwa ngendlela engacacile, kufanele kuqashelwe ukuthi ososayensi abaningi benqaba ukuqaphela leli qiniso, bebhekisela ekungathembekeni kwabesifazane ngokwabo. Emva kwakho konke, ukuba khona kwe- hymen lonke kumfazi, kude
Ngaphezu kwalokho, ukukhulelwa kungenzeka ngezocansi zangasese, lapho u-sperm ugeleza ngaphakathi kwesiswini, futhi ungena ezingxenyeni zokuzala.
Ngakho-ke, ukubeletha kwezintombi namuhla kuphakamisa ukungabaza okuningi phakathi odokotela banamuhla, abangakholelwa ekukhokheni lokhu, naphezu kokuba khona kwamaqiniso wangempela emhlabeni wonke.