Iyiphi Indlela Yokulala Ngesondo Esiza Ukukhulelwa Intombazane?

Uma kukhulunywa ngokukhulelwa, imindeni eminingi iyazibuza ngezindlela ezingase zinomthelela ebulilini bengane. Enye imibuzo ejwayelekile imibhangqwana abayibuza lapho behlela ukukhulelwa ithi, “Isiphi isikhundla socansi esisiza ukukhulelwa intombazane?”

Ayikho imiphumela yesayensi ekhombisa ngendlela engcono yokukhulelwa intombazane. Nokho, eminye imibono iphakamisa ukuthi ezinye izinto zingakhulisa amathuba okuba nengane yobulili olufunwayo.

Isayensi Engemuva Kokukhetha Ubulili

Abantu abaningi bakholelwa ukuthi iqanda lowesifazane yilo elinquma ubulili bengane. Kodwa-ke, empeleni, yiseli lesidoda elingowesilisa elilungisa iqanda futhi elinquma ubulili bengane [1].

Ingane izoba intombazane uma ama-chromosome ocansi eyi-XX futhi ibe umfana uma ama-chromosome eyi-XY [2]. Amaseli eqanda kowesifazane aqukethe ama-chromosome e-X kuphela. Ngakolunye uhlangothi, amaseli esidoda angathwala ama-chromosome X noma Y.

Uma isidoda esiphethe i-chromosome X silungisa iqanda lowesifazane, umphumela uba intombazane. Kodwa-ke, uma isidoda esiphethe i-chromosome Y silungisa iqanda, umphumela kuba umfana.

Izikhundla Ezingasiza Ukukhulelwa Intombazane

Imibono mayelana nezikhundla zocansi isekelwe emcabangweni wokuthi isidoda esiphethe i-X, esikhiqiza intombazane, sihamba kancane kodwa siphila isikhathi eside [3]. Ngokuphambene nalokho, isidoda esiphethe i-Y, esikhiqiza umfana, sishesha kakhulu kodwa sifa masinyane. Ukungenela okujulile kungasiza isidoda esishesha esiphethe i-Y sifinyelele iqanda ngokushesha, kanti ukungenela okungajulile kungakhulisa amathuba esidoda esihamba kancane kodwa esihlala isikhathi eside esiphethe i-X.

Ngokusekelwe kulo mbono, izikhundla ezilandelayo zingase zivune ukukhulelwa intombazane:

1. Isikhundla se-Missionary

Lesi yisikhundla esivame kakhulu ukunconywa lapho nabalingani befuna ukukhulelwa intombazane. Ku-missionary, owesifazane ulele ngomhlane kanti indoda iphezulu. Lesi sikhundla sivumela ukungenela okungajulile, okungenzeka sinikeze isidoda esihamba kancane kodwa esihlala isikhathi eside esiphethe i-chromosome X ithuba elingcono lokufinyelela iqanda.

2. Owesifazane Phezulu

Kulesi sikhundla, owesifazane uba phezulu, okwenza ukungenela kube superficial kakhudlwana futhi isidoda sikhululwe eduze komlomo wesibeletho. Abantu bakholwa ukuthi lesi sikhundla sinciphisa amathuba okuthi isidoda esiphethe i-chromosome Y sifinyelele iqanda masinyane, okungenzeka sandise ithuba lokukhulelwa intombazane.

3. Gwema Ukungenela Okujulile

Ukungenela okujulile, okwenzeka ezikhundleni ezifana ne-doggy style, kucatshangwa ukuthi kuvuna isidoda esisheshayo esiphethe i-chromosome Y. Ngakho-ke, uma uhlela ukukhulelwa intombazane, zama ukugwema izikhundla ezinjalo ngesikhathi sokulala ngokocansi.

Eminye Imibandela Ekukhetheni Ubulili

Ngaphezu kwesikhundla sokulala, eminye imingcele efana nesikhathi sokulala kanye namazinga e-pH emgudwini wokuzala kowesifazane nakho kukholakala ukuthi kudlala indima ekukhetheni ubulili [4]. Isibonelo, ukuhlela ukuba nobulili ezinsukwini ezimbalwa ngaphambi kokuvuthwa kweqanda kungase kusize isidoda esithwele u-Y, kanti ukulala kude kakhulu nesikhathi sokuya esikhathini kungase kusize isidoda esiphila isikhathi eside esithwele u-X. Kodwa-ke, kubalulekile ukukhumbula ukuthi lezi yizimfundiso kuphela hhayi izindlela ezifakazelwe ngokwesayensi.

Ukusebenzisa umkhiqizo onjenge-Conceive Plus Isigcobisi Sokuzala, oklanyelwe ukusekela ukunyakaza nokuphila kwesidoda, kungaphinde kusize imizamo yenu yokukhulelwa. Ngakolunye uhlangothi, uma unelukuluku mayelana nendlela yokwandisa amathuba okuba nomfana, kukhona namasu okudla nesikhathi abantu abathile abakholwa ukuthi angasiza.

Okubalulekile Ekugcineni

Imibhangqwana eminingi ihlela ukukhulelwa inethemba lokuba nomntwana wesibili abayifunayo. Imibhangqwana ivame ukubuza imibuzo enjengokuthi, iyiphi indlela yokulala esiza ukukhulelwa kwentombazane, noma iyiphi indlela engcono kakhulu yokukhulelwa nentombazane?

Ayikho inhlolovo yesayensi efakazela ukuthi isikhundla esithile sokulala sikhuthaza ukukhulelwa kwentombazane noma umfana. Nokho, abanye abantu bakholelwa emibhalweni ethi ukungena kujule kusiza isidoda esithwele ikhromosomu Y ukuze kutholakale umfana, kanti ukungena kungajulile kusiza isidoda esithwele ikhromosomu X ukuze kutholakale intombazane. Khumbula ukuthi okubaluleke kakhulu akusona isini sengane kodwa ukugxila empilweni, uthando, nokubekezela ngesikhathi nizama ukukhulelwa.

Izinsiza Ezisetshenzisiwe

1. Indlela ka-Shettles yokukhetha ubulili | Embryo Project Encyclopedia. (2019, April 3). https://embryo.asu.edu/pages/shettles-method-sex-selection 
2. Gilbert, S. F. (2000). Ukunqunywa kobulili ngamakhromosomu ezilwaneni ezifuywayo. Developmental Biology - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK9967/ 
3. You, Y., Kwon, W., Saidur Rahman, M., Park, Y., Kim, Y., & Pang, M. (2017). Umehluko ekuphileni kwesidoda somuntu kuye ngamakhosombe wobulili ngesikhathi sokufakwa isikhathi eside. Human Reproduction, 32(6), 1183-1191. https://doi.org/10.1093/humrep/dex080 
4. Raval, N. P., Shah, T. M., George, L., & Joshi, C. G. (2019). Umthelela we-pH ekwandiseni isidoda esithwele ikhromosomu yobulili u-X noma u-Y ezinkomeni. Veterinary World, 12(8), 1299–1303. https://doi.org/10.14202/vetworld.2019.1299-1303