Imuphi umbala iso iyona ingane?

Njengoba nje ingane engena kuleli zwe, ogogo nomkhulu, nabangane nabantu obajwayele, obabekazi nomalume, futhi yebo, abazali entsha ngokwabo uyazibuza ngaye ukuthanda pipsqueak. Kabani ukuthi ikhala, umlomo, izihlathi. Futhi omunye wemibuzo main kuyinto: "Kuyini umbala amehlo ingane?" Ingabe abazali blue uneso avele kareglazka intombazane? Noma i-pair of amnyama uneso - umfana onamehlo aluhlaza? Ake ukubhekana!

Yini enquma umbala amehlo ezinganeni? Impendulo isobala lapha akukwazi, phela okungenani u-90%, bese enquma zofuzo, asele 10% namanje kuxhomeke esimweni.

Umbala Iso lomuntu lenziwe kunqunywa inani sombala ngaphansi kwegama "melanin" kule iris we iso. Inani ubuncane melanin - kusho umbala iso okwesibhakabhaka, inani lemali - brown. Okunye imibala kanye shades zitholakala phakathi kwezindawo ezimbili bohlu. Inani sombala zofuzo kunqunywa.

Zonke izinsana ongayo obunsundu noma grey-blue amehlo. Khona-ke, ngokuya ngesivinini kanye nenani melanin ezivezwa umzimba, umbala wamehlo ushintsho. Ekugcineni, zama ukuthola ukuthi yiziphi amehlo umbala ngeke ingane, kungenzeka ukuba sifinyelele eminyakeni emithathu. singashintsha kulonyaka, kodwa iningi lezingane ngokucacile eneminyaka engu-izinyanga eziyisithupha kuze kube ubudala. Kukhona kilomlayo: kunabantu omehlo umbala izinguquko kukho konke ukuphila.

Iphutha yiyona egomela ukuthi uma bobabili abazali brown amehlo, ingane kufanele futhi ube umbala iso. Bamangala lapho sizalwa, ingane eluhlaza okotshani. Bangaki kwemikhaya ngoba kukhona amacala anjalo, lapho abantu abanayo inkomba ebonisa lokho kuyinto zofuzo. Yiqiniso, izinsolo ewela wesifazane. Phakathi naleso sikhathi, kungcono pretty elula. Ake ucabange ngalesi sibonelo elula lamadolobha esimanjemanje esikoleni amabhuku okufunda ngesikhathi biology.

Imuphi umbala iso iyona ingane? Ukuqagela kusengaphambili ngeke zisebenze. Umuntu ngamunye ezimbili ezahlukeneyo isakhi sofuzo efanayo: komama kanye zoyise. izinguqulo ezimbili isakhi sofuzo abizwa ngokuthi alleles. Omunye wabo ovelele, elinye - esikhubazayo. Ngakho, ensundu iso umbala - evelele. Kodwa ingane ungathola allele esikhubazayo futhi omunye wabazali.

Lumelela brown umbala wamehlo uhlamvu "K", kanye nombala oluhlaza, okuyinto esikhubazayo, a "g" amancane. Ukuze umbala wamehlo ku abantu inhlanganisela loMkhandlu alleles ezimbili - owodwa kusukela umzali ngamunye. Ngakho, indoda ensundu uneso kungaba inhlanganisela "CC" noma "KG". Esikhathini ingane eluhlaza okotshani, esikhundleni salokho, kungaba "iminyaka".

Ingane kungaba onamehlo aluhlaza, uma bobabili abazali amnyama uneso akuphelele ukubusa hazel umbala, okungukuthi, kokubili allele "KG". Ngamanye amazwi, uma ugogo noma umntwana blue eyes umkhulu, umzukulu, kungase kube kahle esiluhlaza okotshani!

Umama "KG" + Ubaba "KG" = KK (umntwana brown uneso) noma Kg (ingane brown uneso) noma iminyaka (blue uneso).

Namuhla, kukhona ngisho uhlobo yokubala ukuze sinqume ukuthi umbala angamehlo ingane. Yiqiniso, incazelo yethu kwendikimba kakhulu futhi akuvezi yinkimbinkimbi izinqubo zofuzo. Noma kunjalo, akhulelwe ekukhuleni kwengane - mfihlakalo inkulu, futhi izingqondo zethu akuzona njalo esakwazi ukusibona. Yini amehlo umbala ngeke ingane - ingabe lokho kubalulekile? Okubaluleke kakhulu, ukuthi kahle futhi wahlala ukuphila okujabulisayo, akunjalo?