Kodi ndili ndi wogontha woyera mphaka?

Monga amadziwika, mu chilengedwe, makamaka zakutchire, mtundu woyera nyama ali osowa kwambiri. Kupatulapo mwina kuti anthu a M'madera a zitunda kumalo ozizira, kumene mtundu amapangidwa mwa kusankha zamoyo pa mibadwo yambiri. Koma mphaka anachokera Africa, ndipo iwo anali poyamba bulauni. ubweya awo brownish anatumikira monga chitetezo ku dzuwa, komanso kubisa kuti mwakachetechete zimalowa pa ulimi ndi ambiri kubisa kwa adani zikuluzikulu. Nanga anathandiza mphaka woyera?

Nthawi zina ngakhale pakati pa Makwangwala Olimbana wakuda amabadwa woyera anapiye. Ndipo ngakhale pakati pa anthu (kuphatikizapo akuda) anapeza anthu ndi kwambiri khungu woyera, woyera ngati woyera tsitsi ndi maso utoto yofiira. zodabwitsazi amatchedwa alubino. Ndipotu, osati albino mtundu woyera, ndi kupanda kwake. Mu khungu, tsitsi ndi wa Iris wa diso lili mwadongosolo zolengedwa melanin - mankhwala oteteza thupi ku cheza dzuwa ndi chekeni mu wakuda. Anthu a mtundu Negroid wa puloteni imeneyi zambiri, kumpoto mitundu European - zochepa, ndipo alibiretu albino. Yotsirizira ndi monga mphaka woyera.

Koma ngati kuthengo, anthu amenewa nthawi zambiri kufa oyambirira, osati kupereka mbewu za Pet mwayi lingaliro limeneli. Zachilendo mtundu amtengo m'masiku a ku Iguputo, kumene ankaona chizindikiro cha chiyero ndi wosachimwa. Anthu mosamala nakulitsa ndi jini kale lalikulu la alubino. Tsopano mphaka woyera kwambiri kukhala nawo, ndipo mfundo Itakwana kudula mbali pa mpikisano wa beige kuwala, siliva ndi wotumbululuka gwape amphaka. Ankaloledwa zimalimbikitsa yosalala chipale chofewa popanda mithunzi, komanso mawanga Mipikisano wachikuda. The kuchotserapo yekha ndi amphaka, kumene kungakhale mawanga yaing'ono pamutu - ndi m'badwo, iwo ayenera kutha.

Nyama ndi mkuwa kapena lalanje maso (Mkuwa yemwe ankaoneka White), ngakhale mtundu achisanu, zochepa sachedwa kugontha, koma mphaka woyera ndi maso osiyana (Wosamvetseka yemwe ankaoneka White, chachilendo mu maso), mosakayikira pang'ono kumva vuto. Iye akhoza kukhala wogontha koma

mu khutu limodzi, kapena kukhala zovuta kumva. Mulimonsemo, ngakhale suti mtundu wa mkaka kapena maso a buluu simunayambe okhazikika chizindikiro kuti nyama - wosasamala. Koma ngati mantha, pamene mudzabweranso musakhudze umenewo, ndiye pali kalipokalipo. Mwa ziweto izi wokondeka malo apadera wotanganidwa ndi mphaka woyera ndi maso a buluu (Blue yemwe ankaoneka White). Iye - osati wathunthu albino: thupi lake chili mwa pang'ono melanin, amene mitundu zigawo m'munsi wa Iris wakuda ndi kusapezeka kwa mankhwala mu zigawo chapamwamba amalenga zotsatira za blueness. Nyama kwambiri amtengo ndi kwambiri, maso a buluu. Mwatsoka, 20% thanthwe Blue yemwe ankaoneka White anabadwa wogontha. Udindo ndi epistatic lalikulu jini W, ndiwo wakuyenda "manja" ndi mtundu zakuthambo.

White mphaka amafunika chisamaliro makamaka mosamala, ngakhale chabwino kumva wake. Choyamba, malaya ichi mosavuta kwambiri bii. Chachiwiri, pa maziko woyera Tingaone makutu makamaka zauve ndi maso mabodza. Chachitatu, alubino jini zimapangitsa nyama zimenezi osatetezeka kwambiri cheza dzuwa. Melanin amateteza khungu osati mphaka mukhoza kutenga ndi dzuwa, koma ngati zidzachitika zambiri, ndi khansa ya pakhungu.