Kuze kube manje, kunezinketho eziningi zokuhlela ubulili bomntwana ongakazalwa. Ukuphumelela kwabo kuhlukile, njengalesi sikhathi esasungulwa kuzo. Phakathi kwazo zonke izisayense kunazo zonke izindlela zokuhlela ubulili bomntwana ngokuvota. Kubalwa kwezinsuku ezihle kakhulu nezimo zokukhulelwa kwengane eyodwa noma enye.
Indlela yokunquma ubulili bomntwana nge-ovulation ingenxa kaL. Schettles noDorvik, futhi sizoyicabangela ngokuningiliziwe.
Yini enquma ubulili bomntwana?
Ubulili bomntwana ongakazalwa buxhomeke kwisethi ye-chromosome ye-spermatozoon, eyayiyokuqala ukufinyelela i-ovum. Uma ngabe i-spermatozoon ene-X-chromosome, khona-ke kuyoba khona intombazane, futhi uma i-Y-chromosome, abazali bayobe bethwebula umfana. Ulwazi ngalokhu kwenza ososayensi bakwazi ukuxazulula inkinga yokuhlela ngokobulili kwengane. Ngokusho komqondo wabo, kunezici ezimbalwa ezingaqondile, ukucatshangelwa ukuthi phakathi nesikhathi sokuvuthwa kuzosiza ekubaleni ubulili bomntwana ongakazalwa.
Ezimweni ezinjalo, ososayensi baseMelika bathi:
- ukusabela kwemvelo yesifazane;
- i-motility ye-spermatozoa.
Futhi, amathuba okukhulelwa kwengane ocansini oyifunayo yanda ngokusetshenziswa kwezimo ezithile ngesikhathi socansi.
Indlela yokukhulelwa umfana?
I-Spermatozoa eneqoqo lezakhi zofuzo lihamba phambili uma liqhathaniswa ne "X-abafowabo". Ekhululekile kakhulu nabo endaweni yokulondoloza i-vagin, ngenkathi kusabela kwe-asidi yemvelo bafa ngokushesha. Ukwandisa amathuba okuvela komfana, ungaba nobulili ngosuku olulodwa noma ngosuku lokuvuthwa. Kunconywa ukuthi usebenzise izimo zokufaka ukungena kokujulile kwepenisi ngaphakathi kwesiswini.
Indlela yokukhulelwa intombazane?
Ukuhlela abazali bentombazane ngenqubo yesifazane yokubala i-ovulation, kuhilela ukulala ocansini izinsuku ezimbili noma ezintathu ngaphambi kokukhululwa kweqanda. I-sperm spermatozoa yeselula ne-X chromosomes inamandla kakhulu kunezingqamuzana ezineqoqo lama-chromosomes e-Y. Kuncike ekutheni isimo sokuhlala ngesikhathi sezocansi sasisithunywa sevangeli, amathuba okubonakala kwentombazane aphakeme. Kuyinto efiselekayo ukuthi owesifazane akatholi i-orgasm, ngoba emva kwalokho ukusabela kwemvelo kwendoda kushintshela ku-alkaline.
Incazelo ye-ovulation
Ukunquma izinsuku zokuvuthwa kungaba ukubuka ngokucophelela owesifazane ekushiseni okuyisisekelo komzimba wakhe izinyanga ezimbalwa. Lapho ukuvuthwa kwenzeka, izinga lokushisa likhuphukela kuma-37 degrees.
Ukuqaphela izinguquko ekushiseni kwezinyanga eziningana kungenza isithombe esinembile sokuqala kwe-ovulation. Ukwengeza, ungasebenzisa ukuhlolwa okukhethekile ukucacisa ukuvota.
Ukuqapha okuqhubekayo kungasiza ukuqamba ikhalenda yakho ye-ovulation, ngokusho ukuthi kungenzeka yini ukuhlela ubulili bomntwana. Kumele kukhunjulwe ukuthi le ndlela ayihambisani nokuthembeka ngamaphesenti angu-100, ngoba ifaneleka imijikelezo yokuhlala esikhathini esihlala njalo futhi enembile. Ingozi yokushintsha ikhona kulezi zimo, kubangelwa ukucindezeleka nezifo.