Yeyiphi umbala wamehlo na umntwana?

Kamsinya nje usana engena kweli hlabathi, oomawokhulu, abahlobo kunye nezihlobo, oomalumekazi kunye noomalume, yaye ke, abazali abatsha ngokwabo uyazibuza ngaye ndathanda pipsqueak. Yalo impumlo, umlomo, izidlele. Ke enye le mibuzo iphambili: "Yintoni na umbala kwamehlo na umntwana?" Ngaba abazali blue-eyed kuvela kareglazka ntombazana? Okanye iperi ezimnyama-dong - inkwenkwe amehlo aluhlaza? Makhe ukujamelana!

Yintoni limisa umbala yamehlo ebantwaneni? Impendulo engagungqiyo apha akanakuba, emva bonke, ubuncinane 90%, kwaye ugqiba ukuba yemfuza, i-10% nangoku kuxhomekeka kwimeko.

Umbala Iliso lomntu umiselwa isixa mbala phantsi kwegama "bala lintsundu" kwi iris ze iliso. Imali ubuncinane bala lintsundu - ithetha iliso umbala oluhlaza, esi sixa siphezulu - brown. Amanye imibala kunye ziya ephakathi iingongoma ezimbini zazo. Isixa kabi leyo izakhi uzimisele.

Zonke iintsana ezisanda kuzalwa mhlawumbi emnyama ngebala okanye ingwevu-blue amehlo. Emva koko, ngokuxhomekeke isantya kwaye isixa-bala lintsundu yenziweyo umzimba, iliso umbala utshintsho. Okokugqibela, ukuqinisekisa oko umbala namehlo usana, kuyenzeka ukuba zifikelele iminyaka emithathu. kungenza ukuba eli phakade, kodwa uninzi abantwana ngokucacileyo eneminyaka kwiinyanga ezintandathu ukuya kwiminyaka ubudala. Kukho Niyazi ukuba umthetho, kukho abantu umbala utshintsho ubomi amehlo.

Imposiso na Kuluvo ukuba bobabini abazali emdaka-wayemangalisiwe, umntwana kufuneka babe umbala wamehlo. Bothuka, oko ezelwe, umntwana blue amehlo. Zingaphi iintsapho babeyigqobhozile ngenxa Kwiimeko ezinjalo, xa abantu abanalo nofifi ngoko imizila yemfuza. Kakade ke, lo sola iwela umfazi. Ngelo xesha, nto intle elula. Makhe sihlolisise umzekelo elula kwincwadi yesikolo wangoku biology.

Yeyiphi umbala wamehlo na umntwana? Ukuze ukuthelekelela kwangaphambili kuya kusebenza. Umntu nganye lunee ezimbini zofuzo efanayo: koomama kunye zooyise. iinguqulelo ezimbini zofuzo zibizwa ngokuba alleles. Enye yazo sinamandla, enye - sofuzo. Ngoko ke, brown eye umbala - lubalaseleyo. Kodwa umntwana unako ukufumana allele sofuzo kwaye omnye wabazali.

Libhekisela omdaka eye umbala unobumba "K", kunye nombala oluhlaza, nto leyo sofuzo, i "g" encinane. Ngokuba amehlo umbala ebantwini idibanise uxanduva alleles ezimbini - enye evela kumzali ngalinye. Ngoko ke, le ndoda emdaka-eyed siyi ludibaniso "CC" okanye "KG". Xa umntwana blue amehlo, ke, kunokuba kuphela "iminyaka".

Umntwana kuyenzeka kuba amehlo aluhlaza, ukuba bobabini abazali ezimnyama-eyed ayiphelelanga igunya almondi, umbala, oko kukuthi, zombini allele "KG". Ngamanye amazwi, ukuba umakhulu okanye usana blue amehlo utatomkhulu, umzukulwana, kunokubakho kakuhle oluhlaza-eyed!

Mama "KG" + Tata "KG" = KK (baby Brown-eyed) okanye kg (umntwana Brown-eyed) okanye iminyaka (blue-eyed).

Namhlanje, kukho nkqu uhlobo iikhalityhuleyitha ukumisela into umbala amehlo umntwana. Kakade ke, ingcaciso yethu udandalaziso kakhulu yaye ayibonisi ukuntsonkotha iinkqubo yemfuza. Sekunjalo, ukukhulelwa kunye nophuhliso umntwana - mfihlelo inkulu, kwaye iingqondo zethu azisoloko akwazi ukuzibona. Yintoni amehlo umbala uya umntwana - ngaba kubalulekile? Okubaluleke kakhulu, ukuba sempilweni yaye waphila ubomi sonwabe, hayi na?