Ngaba liyinyaniso elokuba ezi zinto 5 iphembelela besini wosana?

Boy okanye intombazana? Lo mbuzo umdla umfazi kuphela wamitha, kodwa upopu elizayo, yaye zonke izalamane nabahlobo abasondeleyo. bambuza Thina ngaye ngamaxesha onke, yaye kweli xesha ubugcisa, akukho nto iye yatshintsha.

Technology kutshanje abaphuhlisa ngesantya esikhulu, oku kubhekisela izithuthi US. Amagqirha ukuya ku-100% achaza baby floor. Resort kwi-US, hayi kuphela kwimeko xa ufuna ukufumana ukuba ngubani oya kuzalwa. Kuyimfuneko ukuba isifundo ukuqaphela zizifo ezahlukahlukeneyo usana ukuba ixesha elifutshane okanye ukuqinisekisa impilo yakhe. Ngokutsho manani, umlinganiselo inzala amakhwenkwe kunye namantombazana ngu 50/50. Izazinzulu hypothesize ukuba kukho izinto ezithile ezichaphazela isini wosana olo.

In vitro

Abaphandi e Australia bathi usana emgangathweni emfutshane ngoncedo ubuchwepheshe zokuzala, kuxhomekeke ngqo kwi indlela. Umlinganiselo kutshatwa oyindoda lehle nge-49% xa esi sibini ukhethe inkqubo iqanda isigaba cleavage, oko kukuthi, emveni kweentsuku ezimbini okanye ezintathu emva kokukhulelwa. Le pesenti Wavuka ukuya 56 ibhanile vitro, xa umbungu ibekwe isibeleko kwiintsuku ezine emva ukubunjwa. Oyena nobangela ayaziwa. Kungenzeka, oku kubangelwe ubude bexesha ukuba umbungu ichitha elabhoratri.

yokudla

izifundo zenzululwazi kuqhutywa ngo-2000, wathi abafazi, ngubani ngokubanzi wadla kilojoules ngaphezulu, badla ipapa sakusasa, potassium, zabazalela abafana kakhulu. izazinzulu French baye basungula ukutya ekhethekileyo ukuba unalo igama elifanayo. Ibhinqa adle okune potassium kesodiyam ukukhawula inkwenkwe. Kodwa ke impendulo yombuzo ingaba kukhuselekile ukuba impilo kamama okhulelweyo, inkinga.

Musa ukucinga ukuba xa ukunciphisa inani calories ukuba une kusapho lwakho uya kuzalwa yintombi. Eyona nto ibalulekileyo - umama okhulelweyo adle ekunene, abe sempilweni entle.

izazinzulu american baye bathi lo mfazi kokuba akheke adle imveliso zobisi, inyama, alichumi, intlanzi kunye neziqhamo nemifuno amaqunube ukukhawula intombazana. Kuyimfuneko ukuba igwele, ityuwa kunye nokutya enongwe. Umzimba Igcwele calcium. Kodwa musa ukulibala ukuba ukutya kufuneka elungeleleneyo nolupheleleyo, kangangokuba umntwana wazalwa esempilweni.

Izazinzulu azikwazanga ukuwuphumeza ukuba izidlo ezahlukeneyo zenza umntwana phantsi. Okokuqala, kufuneka ulandele izindululo ugqirha wakhe. Ukukhulelwa - ixesha xa umzimba kufuneka batye ukutya okuthile.

imbali yosapho

Abantu badla uzame ukuthelekelela isini usana ngokusekelwe kwinani amakhwenkwe kunye namantombazana azalwe ngaphambili. Kwaye xa onke ngequbuliso, kubonakala ukukhanya intombazana entsatsheni, apho phambi ukuba izizukulwana ezine bazalwa amakhwenkwe kuphela, ithiyori uza ababhangayo. Enyanisweni, kukho ezinye iintsapho kunye yofuzo ethile yemfuza. Kodwa izifundo ashicilelwe engqina oku, akukho. ubungqina bubonisa ukuba oku kwenzeka nje.

imihla kwesisu

Baby phantsi kwaye kwakhona kuchaphazela ixesha ukukhulelwa. Kukho ubungqina bokuba nwebu neentlobano ukuya ovulation, kokukhona ukunika wazala umntwana oyinkwenkwe. Oku kubangelwa yinto yokuba amadlozi ekuhamba kuyo Y-chromosome, baphile ubomi elifutshane kwaye mobile ngaphezu amadlozi kunye X chromosome. Ngoko ke, ukuba ufuna ukufumana kumitha, uzale intombazana, kungcono ukucwangcisa neentlobano kwiintsuku 3-4 phambi ovulation. Le ngcamango nayo imibuzo. Ngowe-1995, oosonzululwazi baseBritani wayeqhuba isifundo andafumana akukho bungqina le ngcamango.

Amanqanaba uxinzelelo nobutyebi

Ngo-2013, oososayensi ezivela Greece waqhuba isifundo apho kwafunyaniswa ukuba kwisithuba seminyaka emibini emva kwenyikima kwisiqithi Zakynthos Isalathisi wenzala oyindoda iye yehla kakhulu. Abaphandi bacebisa ukuba ezifayo ngakumbi Y-chromosome nako ukuphila kumaxesha lokubandezeleka eliphezulu kwengqondo. Ngaloo ndlela, sinokugqiba ukuba uxinezeleko inokuchaphazela amanqanaba hormone emzimbeni kamama elizayo.

Izazinzulu ezivela University Oxford kuqhutywa isifundo sabo. Bagqiba kwelokuba abafazi abaye baboniswa phambi kwesisu ntshikilelo rhoqo kunokwenzeka ngakumbi ukuba uzale intombazana usana. Ekuthiwa-stress hormone awuvumeli ukuba zingene umbungu eyindoda kungena wesibeleko. Musa ukulibala ukuba isidoda kunye Y-chromosome phantsi stress uhleliyo encinane kakhulu.

Kwakhona ngo-2013, omnye nezindlu zokupapasha wempangelo bapapasha imfundiso ethi usapho uyindlalifa abazizityebi ukuze ukukhanya kokuphuma amakhwenkwe. Kungenzeka, isibakala sokuba abantu abangazange kufuneka asebenze nzima ukuze ufumane imali eninzi, kuxhomekeke uxinezeleko kangako. Noko ke, le ngcamango nje, ukuba akukho kwezesayensi.

Ukunciphisa uxinezeleko, abazali elizayo abanqwenela ukunika wazala inkwenkwe angenza yoga.