Umbhangqwana oshadile ulindele ukuzalwa kwengane, amaphupho kuphela wokuthi ingane yabo iphilile. Kodwa-ke, azilahli imizamo yokusebenzisa zonke izindlela ezikhona zokunquma ubulili bomntwana. Zihlanganisa: ukubalwa ngosuku lokuvuthwa kwegazi, ngesikhathi sokuvuselelwa kwegazi, ngesikhathi sokukhulelwa kanye nokukhetha kokudla. Sizojwayelana nekhalenda le-ovulation, nokuthi singabala kanjani ubulili bomntwana.
Isibikezelo socansi lomntwana ngosuku lokuvota
Bala ukuvuthwa kobulili kwengane kunganeka uma ukwazi izici zomzimba zesidoda - isidakamizwa esingakanani esakhiweni sayo se-chromosomal i-X noma i-Y chromosome, esinquma ubulili bomntwana. Ngakho-ke, iqanda liqukethe i-X-chromosome kuphela, futhi lihlangana ne-sperm elinomfanekiso we-chromosome wobulili obufanayo, uzokwakha isisu somntwana. Ngakho-ke, uma iqanda lihlanganiswa ne-Y-chromosome, i-fetus yesilisa izokwakha.
I-Spermatozoa ene-X-chromosome ayisebenzi futhi ibe nokusebenza okuphakeme. Ngakho-ke, bayakwazi ukuhlala emthonjeni wezintambo kuze kube yizinsuku ezingu-7 ngokulindela ukukhulelwa. I-Y-spermatozoies, ngokuphambene nalokho, ibe nokuhamba okuphezulu nokuphila okuphansi (emfihlo ye-alkaline yangasese kungaphila kuze kube yizinsuku ezimbili ngaphambi kokuvuthwa).
Ngakho-ke, uma ukukhulelwa kwenzeka emva kokuvuthwa, khona-ke ubulili bomntwana cishe buba yindoda. Futhi uma ukulala ocansini okungavimbelwe kwenzeka okungaphezu kwezinsuku ezingu-4-5 ngaphambi kokuvuthwa, khona-ke i-spermatozoids izofa ngesikhathi sokuvuthwa, futhi ukukhulelwa kuyokwenzeka njenge-X-spermatozoon, echaza ukukhulelwa kwentombazane.
Chaza i-ovulation ukubala ubulili bendodana engakazalwa, ngezindlela ezimbili: ngokulinganisa ukushisa okuyisisekelo (ngosuku lokuvuthwa kwegazi, izinga lokushisa lizophakama ngamapremu angu-0.4-0.6) noma kusetshenziswe izivivinyo ezikhethekile ze-ovulation .
Ukuvota kanye nokubala wokunquma ubulili bomntwana
Enye indlela yokunquma ukukhulelwa komfana noma intombazane ngosuku lokuthunga ifulethi yithebula elikhomba ubulili bendodana ngenyanga yokukhulelwa kanye neminyaka kanina.
Kodwa ungazama ukubala ubulili bomntwana usebenzisa i-calculator ye-intanethi. Ukuze wenze lokhu, faka inombolo yosuku lokuqala lwenyanga, isikhathi sokuphuma kwesikhatsi, bese ufaka ukubalwa kwesondo ohlosiwe lomntwana. Kungakanani umphumela oqondile we-calculator onjalo ongahlulelwa ngokuthembeka.
Ngakho-ke, wazi kangcono ikhalenda ye-ovulation nezindlela zokunquma ubulili bomntwana, kodwa ungakhohlwa ukuthi akekho kulezi zindlela ezinganikeli umphumela we-100%. Futhi ubulili bomntwana wakho ongakazalwa buyathembeka ngokwengeziwe phakathi nesifundo sesibili esilungiselelwe i-ultrasound.