Mahlo a maputsoa - ka lebaka la phetoho liphatseng tsa lefutso le

Bo-rasaense ba na le leha ho le joalo ho fana ka maikutlo a hore phetoho liphatseng tsa lefutso e hlahile, 'me ho na le e ne e le monna ea mahlo a maputsoa, empa ba bang ba matšoao a bontša hore, ka ho fetisisa ka etsahala hore ebe, ho etsahetseng lilemo tse mashome a' maloa tse fetileng. Nakong ena, ho ne ho le boima kolone ea Europe, ka temo Bochabela bo Hare o ile a qala ho hasa ka Europe.

hlahang ho yona

Journal of Human liphatsa tsa lefutso bo-rasaense ba beha fatše hore phetoho liphatseng tsa lefutso, e leng se entseng hore ponahalo ea mahlo a maputsoa hues, fetisisa ka etsahala hore ebe e etsahetse ka leboea-bophirimela ea sebaka se Black Sea.

Professor Eiberg ile a boletse hore "ya kamehla" 'mala mahlong a batho e lokela ho ba sootho. Lefifi putsoa mahlo - ka lebaka la phetoho liphatseng tsa lefutso, hobane lefifi letlalo pigment - melanoma, e ama ponahalo ea masea a sootho-eyed tsoaloa. Leha ho le joalo, Europe Leboea OCA2 phatsa ea lefutso ka buuoa ka makhetlo liphetoho senya tlhahiso ea melanin ka iris e, e leng e ile ea etsa hore ho hlaha ha 'mala o boputsoa.

Professor Eiberg ile a bolela hore mahlo a sootho ne pele ho tsohle, empa liphetoho liphatseng tsa lefutso tse chromosomes rona OCA2 phatsa ea lefutso ile a etsa hore "phetoho" hore "tima" bokhoni ba batho ba ho hlahisa 'mala o sootho.

The iris e fapana ka tjhelete e ya melanin, le hues Ka hona fapaneng sootho. mahlo a maputsoa le batho ba nang le moholo-holo a ba fetohile phatsa ea lefutso. Kaofela ha bona ba futsitse ho phetoho liphatseng tsa lefutso e tšoanang ka DNA bona.

banna ba putsoa-eyed le basali ba na hoo e ka bang le tsoanang liphatsa tsa lefutso tatelano ea karolo ea tsa DNA molek'hule, eo ke eena ea ikarabellang bakeng sa leihlo mmala.

Professor Eiberg ile a khanna DNA ho hlahloba batho ba fetang 800 ho tloha tšoeu-bo sohlokehile Scandinavian blond ho batho ba lebala le letšo, empa ka mahlo a maputsoa, ho phela Turkey le Jordane. teko ea hae o ile a tiisa la khopolo ea e le 'ngoe-holo lintho tse tloaelehileng.

Ho ke se se sa na ke hobane'ng ha 'mala o moputsoa mahlo ho feta e atile har'a ea baahi ba Afrika ba Russia le Northern Europe. Nakong e fetileng ho ne ho nahana hore tšobotsi ena e fana ka monyetla ka itseng ea lehlabula khitla letsatsi kapa ea mariha Polar. Mohlomong ena e nkoa e le motle ho feta 'me, ka lebaka leo, ho molemo ka ho fetisisa bakeng sa ho khetha ho kopanela liphate.

Features

Anatomically iris e akarelletsa ho ectodermal le mesodermal lera. Kamoo ho ka li abela pigment le itšetlehile ka 'mala. Chromatophores li aba ka mesodermal kolohantsoeng, ba na le melanoma. The backsheet kenyelletsa ditokiseletso lisele tse ngata pigmented tlala fustsinom. Phetha karolo e likhoele le iris e lijana.

Senotlolo khanya mebala - mala o moputsoa, e putsoa le bohlooho.

Ectodermal lera tlholeho ka lefifi 'mala ba lehodimo. Ha likhoele Link ea iris e ho na le segokanyipalo tlaase le dikahare tlaase ea melanin, leseli phahameng maqhubu a e ananelang mesodermal lera le tlaase khanya maqhubu e bonahatsoa ho lona. mahlo a maputsoa - ka lebaka la ho li-index ena.

Ho na le batho ba neng ba lora ho fetola 'mala oa hao tlhaho ho putsoa. Ba lumela hore pono ea ka nako e tšoanang ba le botle, botebo le esita le boleng. Hangata ka ho fetisisa e bua ka motle putsoa mahlo inahanela putsoa-eyed batho ba ka khabisa sebelisa ba bang ba mananeo a, tse kang Photoshop. Mora a etsa liteko le litla ya khomphuta ya hao, o ka nka ho tsoa litlolo nepahetse le litlolo.