Umbuzo: Amehlo omntanami azoba ngumuphi umbala?
Uma wena nomlingani wakho womabili unamehlo aluhlaza okwesibhakabhaka, ingabe uqinisekisiwe umntwana onamabala aluhlaza okwesibhakabhaka? Mhlawumbe unamehlo aluhlaza namehlo omlingani wakho aluhlaza ... ingabe amehlo omntanakho azoba yi-hazel? Abazali abasha bavame ukubuka amehlo omntanakho ngokumangalisa futhi bemangale, futhi bacabanga ... amehlo omntanami azohlala lo mbala? Ngiyiphi umbala lapho amehlo omntanami azoba khona?
Impendulo:
Iningi lezinsana zizalwa ngamehlo aluhlaza okwesibhakabhaka noma aluhlaza, kodwa kuye ngokuthi umbala wamehlo akho namehlo omlingani wakho, kungenzeka noma angahlali umbala wokuzalwa.
Umbala Wamehlo 101
Amehlo akho athola umbala wabo kusuka ku- iris . Iris ihlanganiswa nemisipha, imithwalo yegazi nokugqoka. I-pigment equkethwe iris ibizwa ngokuthi i-melanin. I-Melanin nayo iyimibala eyenziwa ngumzimba wakho ukuze unike isikhumba sakho nezinwele umbala wazo. Inani (noma ukuntuleka) kwe-melanin pigment ku-iris yakho linikeza umbala walo. Uma i-iris engaphezulu i-melanin i-iris yakho inobunzima, iso lakho libomvu. I-melanin encane ye-pigment, iris iris yakho elula. Ngakho akuyona umbala ohlukile we-pigment, kodwa inani elikunika umbala othile weso.
Ngamehlo omntana osanda kuzalwa , inqubo ye-pigmentation ye-iris ingakapheli. Izingane ezinesikhumba esimnyama zivame ukuzalwa ngamehlo amnyama ahlale emnyama. Umbala we-Iris ebantwaneni abakhanyisa ukukhanya ngokuvamile ubala umbala ohlaza okwesibhakabhaka noma ohlaza okwesibhakabhaka lapho uzalwa, bese ushintsha kancane kancane.
Ukukhiqizwa kwe- Melanin kuyashintsha phakathi nonyaka wokuqala wokuphila, ngokuvamile kubangele umbala omnyama, ojulile weso. Kucatshangwa ukuthi njengoba nje isikhumba sethu siqala ukuthunjwa lapho sibhekene nelanga, kunjalo ne-iris. I-Sunlight ingase ivuselele ukukhiqizwa kwe-melanin, ngakho-ke uma uqala ukungena ezweni langempela, umbala wakho we-eye uqala ukushintsha.
Uma ingane yakho inomuthi omncane nje we-melanin, uzoba namabala aluhlaza okwesibhakabhaka. Uma nje i-melanin encane nje ikhona, ingase ibe ne-gray, eluhlaza noma i-hazel. Uma une-melanin engaphezulu, amehlo akhe angase abe mnyama kakhulu.
Nakuba ukukhanya kunomthelela kumbala weso, umbala wokugcina cishe ulawulwa yizifo esizizuze kubazali bethu. Umbala wamehlo unomphela awusethiwe kuze kube yilapho ingane ingenani izinyanga eziyisishiyagalolunye ubudala, ngakho-ke ulinde kuze kube usuku lokuzalwa lomntanakho ukuze unqume umbala weso . Ezinye izingane zize zinezinguquko kuze kube cishe eminyakeni emibili noma emithathu ubudala. Abantu abangaba ngu-10% bayaqhubeka beba nezinguquko zombala wamehlo njengoba bekhula baba ngabantu abadala.
Umbala Wamehlo Nezakhi Zofuzo
Sula iwebhu bese uzothola ambalwa wokubala ambala wokubala embala. Nakuba iningi lazo lingase lifike eduze kombala wamehlo ingane yakho ingase ibe nayo, inkinga eyodwa oyothola ukuthi abaningi bethu abanaso amehlo ensundu noma aluhlaza okwesibhakabhaka. Amehlo akho angaba yinhlanganisela eluhlaza okwesibhakabhaka nohlaza oluhlaza okwesibhakabhaka. Ingabe lokho kubonakala njengokuhlaza, okwesibhakabhaka noma okubomvu?
Ukusebenzisa i-calculator kungase kungasebenzi. Kweminye imindeni, ifa lebala lombala lilandela amaphethini alindeleke kakhulu kanti kwezinye imindeni, kubonakala kungenangqondo noma kulandela noma yimiphi imithetho. Kuzofuzo, lokhu kubizwa ngokuthi "i-polygenic." I-Polygenic isho ukuthi kungase kube nezakhi zofuzo eziyinkimbinkimbi ezithintekayo ezibandakanya ukwenza umbala weso.
Ukusho nje ukuthi umbala obomvu ungaba obala okwesibhakabhaka kwenza izincazelo ezilula, kodwa lo mzekelo ulula kakhulu kuzo zonke izinhlobo ezibonakala ekuphileni kwangempela.
Ungadangali uma izakhi zofuzo zibikezela ushintsho embala weso lomntanakho. Izakhi zofuzo ezilula futhi ezilula ezithinta iningi lethu esikoleni zingasondela ngokubikezela umbala weso lomntanakho. Isibonelo, uma amehlo akho nomngane wakho abomvu, kepha omunye wenu unomzali onamehlo aluhlaza okwesibhakabhaka, kusekhona ithuba elincane lokuthi amehlo omntwana wakho azohlala eluhlaza okwesibhakabhaka. Uma une-blues futhi umlingani wakho unobundu, amehlo ensana wakho anomathuba angama-50% omunye.
Uma bobabili wena nomlingani wakho ninamehlo aluhlaza okwesibhakabhaka, amehlo omntanakho ngeke ashintshe futhi ahlale engumntanakho okhanyayo!
Umthombo:
UMats, uRichard A noLarsson Sturm. I-Melanoma yeselula, "I-Genetics yembala yabantu iris namaphethini." I-Melanogenix Group, i-Institute for Molecular Bioscience, i-University of Queensland, iBrisbane, Australia, iphepha 544-562.