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AMASO
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Ibara ryijisho ni fenotipiki ya polygeneque igenwa nibintu bibiri bitandukanye: pigmentation ya iris yijisho ryijisho [1] [2] hamwe ninshuro-biterwa no gukwirakwiza umucyo ukoresheje uburyo bwa turbid muri troma ya iris . [3] Mu bantu, pigmentation ya iris iratandukanye kuva mwijimye wijimye ugahinduka umukara, bitewe nubunini bwa melanin muri epitelium ya iris pigment (iherereye inyuma ya iris), ibirimo melanin biri muri stroma (iri imbere yimbere iris), hamwe n'ubucucike bwa selile ya troma. [4] Kugaragara kwamaso yubururu, icyatsi, na hazel biva muri Tyndall ikwirakwiza urumuri muri troma, ibintu bisa nkibibara ubururu bwikirere bwitwa Rayleigh gutatanya . [5] Ntabwo ibara ry'ubururu cyangwa icyatsi kiboneka muri iris ya muntu cyangwa amazi ya ocular . [6] [7] Ibara ryijisho rero ni urugero rwibara ryimiterere kandi riratandukanye bitewe nuburyo bwo kumurika, cyane cyane kumaso yamabara yoroshye .Amaso afite amabara meza yubwoko bwinshi bwinyoni aturuka ku kuba hari izindi pigment, nka pteridine, purine, na karotenoide . [8] Abantu nandi matungo bifite fenotipiki itandukanye muburyo bwamaso.[9]
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